How to multiply string with integer. charAt(1) is (char)53.
How to multiply string with integer A list with zeros. if num = 4 and string = "three" then the function should return 12 as an int. string Multiplication in C++-1. And for the other thing, OP should learn the language and show his code plus what the problem is. and to take away a health id simply just multiply if by one less number, System. It seems more logical to me to get back an int than a char. If the integer is negative, we use its absolute List comprehension uses the string multiply, and shouldn't be dismissed out of hand. Leetcode's discussion page is the best Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The result that you get is typically an overflow issue, for a long: java allocates 63 bits for the number and the Most Significant Bit (MSB) for the sign (0 for positive values and 1 for negative values) so 64 bits in total. setText(int resource) can be used to set a String resources in the TextView. text intValue]. in); int x = n. join("a") // create string Multiplying Lists and Strings. For loop for defining index and len() in python. If you multiply it with 2, you'll get -0. 5 * 3. Note: You must not use any built-in BigInteger library or convert the inputs to integer directly. println("The total multiplication that you have You need to convert message3 to an integer to be valid for multiplication: int result = Integer. For instance, to multiply 123*456, we compute 123*4 + 123*5*10 + 123*6*100. parseInt(bBin, 2); // Do the math you want and store the result on 'r' int r = a * b; // If you want, convert the result to the binary string format String rBin = Integer. MAX_VALUE = 2^63 - 1 = 9223372036854775807 = Let's say I have a standard Python string (such as one obtained from raw_input()), maybe "2 + 2" for simplicity's sake. Although this is not an efficient approach. Better than official and forum solutions. They are one of the most fundamental data types in all programming languages. This is taken straight from it. To tell the assember you want the first flavor, give mul an operand that is Hi All, Suppose I have a string, if I want to basically write it multiple times, depending on some integer value. The most straightforward way to multiply a string is to use the repeat() method on the String class. toString() (StringBuffer for older With Java 11, there are several ways to convert an int to a String type: 1) Integer. (And other types, of course. For a quick run-down, we are passed in an equation as a string. String ="a2b10" convert to String ="aabbbbbbbbbb" string can have different values: "a2b15", "a16b4c1","a11b14c5" below I made it only for one letter and one number eg. You can't multiply strings together. Also note that 'a' * 4 is the same as 4 * 'a' , because the types of the two operands make their roles clear, so order doesn't matter. parseInt(sample2); System. Concat together with Enumerable. I'm a programming beginner trying to learn Python. Commented Feb 6, 2022 at 7:24 @DeepakAnanth you may easily find various ways of solving the problem in its discussion page. split("\\s+");//remove any leading, trailing white spaces and split the string from rest of the white spaces int[] intArray = new int[stringArray. Multiplying a string (say s) with a number (say n) will concatenate the same string n times. Without the @ verbatim symbol, \s are interpreted as escape strings by the compiler and as such need to The result of the multiplication of a float and an int is a float. Note: You must not use any built Because the valueOf() will get the int value of a String, and the parseInt will try to convert a string to int if your string is like this "123bla" parseInt will give you an error, thats why you need to use try and catch Now that we have covered the basic approach to multiplying a string by a number, let's explore other methods that can achieve the same result. If you're trying to use the numbers 2 and 5, yes, you'll have to parse them. Let's see some examples. WriteLine(string. multiplying letter of string by digits of number. How to copy a char array / String a variable number of times Whether you intend to repeat a certain string multiple times or create patterns, mastering the art of multiplying strings in JavaScript can be immensely beneficial. str(); } Depending on the implementation, this may be slightly more efficient than simply concatenating the string n times. repeat() method. Each time this code is called, s is constructed as a new String object, and javac converts that code to String s = new StringBuilder(). That term is well defined. You will want to use TextView. char is a numeric type, same as int but shorter. parseInt(sample); Integer. Multiplying Lists Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. mul comes in 2 flavors:. Multiplying an number by a numerical is arithmetic multiplication, but for lists and such, it means repetitive concatenation for integrals. 0 Multiplying ints on PHP? 1 Without trying to run this or look at it under a debugger: it looks like you're setting up an extra variable which is a carry, i. So, you need to convert that string to a number before performing any calculation. Understanding the Basics JavaScript Multiply String. JavaScript arithmetic operations between strings of numbers. parseLong(String) or Integer. toString()). select A, B, doubleval(C) as c from your_table Parse the string so that you get a number, then you can use that in a calculation. ToString(); i would like to multiply string by an interger value, for what im working on is a health system for a simple game. NSInteger number = [firstTextField. You need to store the result of smaller calculations in another data structure, like an array or a string. The repeat() method takes a number as an argument and returns a new string that is the I think you are doing it wrong. Iterate over each digit in the second number (num2) from right to left. If you're clever, you can make map work without lambdas a lot, e. Second) // prints 10s But, of course, multiplying a duration by a duration should not produce a duration -- that's nonsensical on the face of it. MAX_VALUE + 1 equals to -9223372036854775808 because Long. In this tutorial, we will learn how to multiply Strings in Java. 1. If you're using . text integerValue My monthly results come into Tableau as a varchar, which all of the data is a string. The temp variable on the otherhand, will never be more than a two figures number, so it's not necessary. String to number JavaScript. Using this operator, we can concatenate the same string for n number of times. We can use the multiplication operator * for that. valueOf(str). Object dtype converts the string dtype to Python strings, and then delegates the action to the string multiply. You can iterate over consecutive characters easily. It's not possible. To add together the pieces you have to use the + operator, like in "#"+" "+"#". Multiply Two Variables Using the “expr” Command in Bash. The problem with the second way is the way Strings are handled in Java: "0" is converted into a constant String object at compile time. The doubt i have is why is 3. – multiplying a string with a number. Multiply string using repeat() method. If it is a string, it will concatenate twice. It is like str + str +n times. Repeating Strings: Repeating a string involves creating a new string that consists of the original string repeated multiple times. public class StringWrapper { public string Value { get; set; } public StringWrapper() { this. (It is not in Internet Explorer. However, you'll need to change the declaration of decVar as currently the right To multiply two numbers n1 and n2, we multiply n1 with each digit of n2, and accumulate the result shifted on the left by the position of the n2 digit in the final result. Int32 A 32-bit signed integer that is equivalent to the number in value, or 0 (zero) if value is null. select A, B, C * 2 as c from your_table (OR) If you want, create your own scalar UDF which will return the double value as. e. i thought when i multiply a string by a number, Multiplying a string by an int in C++. 'c'*8 is valid c code, because it coverts character into its integer value and performs standard integer multiplication. How do you let a user input a decimal number? 1. The thing is I know this piece of code could work: a = 'Welcome to India' required = a * 3 # but this code is not comma-delimited. charAt(1) is (char)53. Like this (variable names are none-java-style for extra readability, no bashing about it): Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Multiply Strings Using the Stream API in Java. I want to have a line like this. When you multiply a string by an integer, the string gets repeated that many times. parseInt() String str = "1234"; int result = Integer. for x in Code👇https://github. In the example below, Stream. Asking for help, clarification, or responding to other answers. The %d format is used to print int types. This algorithm is based on the elementary school multiplication method. 00 rather than 100 to force decimal arithmetic instead of integer. sarnold@haig:~$ bc -q 3. We are to break it down, format it correctly and solve the linear extract all the digits after that and then look to see if there was a leading '-', if there is, multiply the int by -1. Python Input Decimal Numbers and Whole Numbers (Float) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Try. And if n is less than or equal to 0, then it'll return an empty string. For instance, multiply('2', '3') should return '6' (as 2*3 = 6) So you have a Map which contains multiple types of objects as values? Well, that is the reason why Dart have automatically declared the map as Map<String, Object> which means you need to type cast objects taken from this map. decode Notes: len(x) is the "bytes" length (number of bytes) of the string (in UTF-8 encoding, this is how Go stores strings in memory). In [8]: s = "123" In [9]: 2*sum([int(ss) for ss in s]) Out[9]: 12 Share. join("a") // create string Below is the code that I'm currently using, which correctly prints out the hill, but the triangle and hourglass both have an extra space on each line, despite the first iteration of the while loop multiplying by zero. This problem requires us to write a function called multiply() that accepts two non-negative integers – num1 and num2 – represented as strings. Note that *10 and *100 are simply left shifts. Here is a simple implementation of the long multiplication algorithm: The Multiply Strings Problem. To get the most out of this tutorial it is suggested To (properly) multiply an string by an integer, you split the string into characters, repeat each character a number of times equal to the integer, and then stick the characters back together. parseInt(message3) * 3; you have to first convert a string into integer. A You need a way to look up a price given a product name. Array(11). char applies string methods to elements of an array. In this Using the String. This may be useful since you used a string of one character as the example. Hold the answer in a string and not long long int. Why do you think it should? You multiply an int and a char. MAX_SAFE_INTEGER. Below is the code for Multiplying two str In Java, you can multiply a string by an integer to create a new string that is the concatenation of the original string that many times. One problem I can see is that if the last product in your inner loop produces something greater than or equal to 10, you This article will help you to learn how to use all three methods to multiply the string, starting from using the String. To convert an integer number of units to a Duration, multiply: seconds := 10 fmt. You can multiply numbers, and it sounds like that's what you want to do. nextInt(); In-depth solution and explanation for LeetCode 43. Viewed 2k times 1 . cppQuestion Link👇https://leetcode. For cost we will use float, cause it can contain fractional number. The * (multiplication) operator yields the product of its arguments. NET 4. Intuitions, example walk through, and complexity analysis. repeat(10) Before repeat, we used this hack:. As for actually repeating the number, you just need to turn the string back into a number: return int(str(num) * 3) Full code: def repeat_number(num): if not isinstance(num, int): return None else: return int(str(num) * 3) cast(replace(A,'%','') as int)/100. . 0, you could use string. From what I have read it appears this is something to with multiplying integer by strings (though I may be wrong). For each digit, multiply it Multiply Strings - Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. In-depth solution and explanation for LeetCode 43. I know. c) 7 x 10 = 70 Here, the result is a positive integer as both integers to be multiplied have the same sign. Each digit of one number is multiplied by each digit of the other number, with the results stored in an array. One approach to multiplying strings by a Convert the two input numbers from strings to lists of integers. Follow answered Oct 1, 2016 at 21:24. 5, etc, to be shown as a number and the Met / Missed to be shown as a string. To convert str to numbers we will use float() and int() functions. But it doesn't work for big values and I'm not allowed to use the Big-Integer library. To multiply a variable in bash. So knowing that, Long. values): # formatting the value and variable in the current String = "Hello world"; How do you get it to print out (n) times? For example. This method converts a numeric string to an int by interpreting each character as a digit. setText(String. The function should return the product of num1 and num2, also represented as a string. length; i++) { intArray[i Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Multiply Strings in C - We have given two strings consisting of integers and can have lengths up to 200. )So unless you need to support older browsers, you can simply write: "a". The code starts with a long integers a & b, which are multiplied using array, converted to a string and then back into the long int. There are other methods to build a string but the simplest, most obvious one is adding together some fixed pieces and some computed pieces, in your case a "#", a sequence of spaces and another "#". And, regardless of what you find logical or not, the Java Language Specifications defines how such operations are done: char is promoted to an int, then the two ints are multiplied, and that gives an int. I will suggest creating a class with your data instead so you can get type safety. repeat() method will return a new string value that contains the number of copies of the duplicate :: String -> Int -> String duplicate string n = concat $ replicate n string The $ is a function of type (a -> b) -> a -> b . For each digit, multiply it with each digit in the first number num1, and add You're multiplying the numbers digit-wise, and you're not handling the powers of 10 correctly. Any help would be greatly appreciated. 3. out. ) Now decimal can't be implicitly converted to int, but the reverse conversion is valid - so that's what the compiler does. Example: The Integer. string - number = the difference between (coerced string) and the number. While convenient, it seldom is fast. Is there an easy way to do the following (from Python) in Rust? >>> print ("Repeat" * 4) RepeatRepeatRepeatRepeat I'm starting to learn the language, and it seems String doesn't override Mul, and I can't find any discussion anywhere on a Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I don't think that you can extend System. 1234"] I coded a simple solution which multiplied 2 integers given as strings and returned the product as a string. She is using the code below, however it repeats the number rather than multiply it. For this you have to convert it into Integer or int using NSNumber or using: [secondTextField. Let's take a look at how this works. 5";//Double in a string String string2 = "6"; //Integer in a string double multiplied = Please don't teach people to use map with lambda; the instant you need a lambda, you'd have been better off with a list comprehension or generator expression. Modified 4 years, 10 months ago. If it is a number, it will double. int N = 5; // or whatever Console. 0. Here you have the inverse issue: C#/. Multiplying it with an integer gives you an integer. Duration(seconds)*time. Example: int hours = Int32. When used with a string and an integer, it creates a new string that is a repetition of the original string. And I want to multiply this string with 3, but to appear with comma delimitation, like "Welcome to India, Welcome to India, Welcome to India". Can we extract number from string and multiply them. multiply two 8-bit values (AL and mul's operand); store the 16-bit result in AXmultiply two 16-bit values (AX and mul's operand); store the 32-bit result in DX AXYour question is a bit vague, but I assume you want the first flavor, but instead you found yourself faced with the second. create function doubleval(@val int) returns int as begin return @val * 2; end Then, in your select use it as. In Java, converting a String to an int is done using methods from the Integer class. So you will have to. println("Enter the number of times you want to print a string"); Scanner n = new Scanner(System. Is it possible to access the actual integer value of the iterator so I can multiply spaces by it? Code solutions I've tried. 1415 * '10'*'10' value 4. – Pradeep Simha Commented Apr 26, 2019 at 19:52 Your values are either lists or strings (some form of iterable). valueOf(solution1)); Convert the string to whatever number datatype is appropriate (long if a big number, float/double for decimals etc. parseInt(aBin, 2); int b = Integer. Check the documentation. Here's my code and my main question / question is how do I easily turn the string into an integer so I can multiply the two together: System. Improve this answer. Method 1: School Mathematics. We will multiply String by using String. Note that there are two ways to use \ as an escape character: if you prefix a string literal with the verbatim symbol (@), then \ characters are included in the string as-is, which means that as part of a format string a single \ will function as an escape character. Just multiplying C by 2 (I mean c*2) makes any problem here. Php - Multiply numbers in the Take a look if it helps: // your 2 binary strings String aBin = "100001"; String bBin = "111110"; // convert them to int int a = Integer. When you use + on them, they're converted to ints, and you end up with 103 (not 100). Pass the two big numbers as strings to this function, the result is returned as a string. Besides that, it will get promoted to double when passing to printf. You may well want to reduce the number of decimal points returned, in which case cast it back to your desired I have a big time trying to either convert a string into a integer or multiply two integers. But that does not make the operqation a multiplication. I guess what I am asking is how do I get to convert the string number "two" to int 2. By using NSExpression is one way to Multiply/Add/Subtract two number strings without converting them into integer or number. Then multiplying each digit of the first number with second last digit of the second number and so on as follows: The problem is your solution variable is an integer. RuneCountInString() . It seems a bit over How to convert a string into a number by multiplying and diving by 1; How to convert a string into a number by using the Unary + operator; What Is a String in JavaScript? Strings are an effective way of communicating through text, such as storing and manipulating text. The String. However I cannot get the them to multiply Python: Multiply a number in a string by a constant. println(heart4*7); to have an output of How does string-based multiplication work in Java? String-based multiplication involves simulating the manual multiplication process. One way is using a Map:. How can I write a function in JavaScript that takes two parameters (a number and a "string" for e. You can use bash command substitution to be more portable across systems than to use a variant specific command. See Data Types - Code👇https://github. If the integer is negative, we use its absolute There is already a question for this here: How to repeat a string a variable number of times in C++? However because the question was poorly formulated primarily answers about character multiplicat In Python 3 input will return a string. Indeed, you're already parsing the strings as integers - and then ignoring the result. In Python 3 input will return a string. And be prepared for "bad input" (i. with java api you can acheive this using parseInt(String) or using Integer(wrapper class) constructor like below. Multiply strings. setText(String text). s. int userMiles, userMiles; because in C++ you can't use the multiplication operator with strings, this can be actually used in other programming languages such as python like when you multiply a string by a number the string will be repeated but in C++ you can't use arithmetic operators with string except "+" which can be used to join 2 I would like multiply letter by number in a String and return other String. Empty; } public StringWrapper(string value) { this. Repeat(indent, N))); Otherwise I'd go with something like Adam's answer. valueOf() String str = "1234"; int result = Integer. g. string + number = concatenated string. values,df2. Value = string. To (properly) multiply an string by an integer, you split the string into characters, repeat each character a number of times equal to the integer, and then stick the characters back together. For example, if you have a string “Hello” In this tutorial, we will learn how to multiply Strings in Java. println(heart*7); System. You just need to change this: Integer. To do this, click on the "Abc" icon next to the =EUR field in the dimensions pane and change it from String to Number (decimal). The question statement itself says: You must not use any built-in BigInteger library or convert the inputs to integer directly. You need a %a, %e, %f or %g format. adding numbers in a string and multiplying by 2 in python. np. Ask Question Asked 12 years, 8 months ago. Value = "" Then In Java, converting a String to an int is done using methods from the Integer class. Basically same as manual multiplication. Type: System. both strings do not contain any leading 0, but 0 as the number itself can be present. Sup You're trying to multiply a string with some number. Therefore the "15" that is value for total1 must be returning 0 from the Convert method giving you a total of zero (0) after the multiplication. You are using pow(10, j), which again should be replaced with string concatenation. Multiplying string by a factor in C++. How I can do that? For example: dim STR1 as string = " " dim INT1 as integer = 4 dim STR2 as string = " " I would like to see the output as These days, the repeat string method is implemented almost everywhere. It is below: Private Sub cmdAdd_Click() Dim emptyRow As Long Dim ctl As Control Dim A As Integer Dim B As Integer Dim C As Integer Dim D As Integer Dim E As Integer Dim Answer As Integer Dim Answer2 As Integer Dim Answer3 As Integer If Me. There is no type conversion going on here. 2 sarnold@haig:~$ bc -q -l 3. Often it is fastest, especially if starting with lists. check if the strings entered by the user is actually a valid double; if they are, convert those strings to double and multiply them; convert the result to a string, and assign it to the labels Text property You are multiplying strings above, do this: QV = FRT * UI Share. If we provide the n value as zero or negative, it will return an empty string. The array is then processed to handle carry-over and converted into the final product string. 00*B Note: You need to use 100. We will multiply String by using String. Multiply Strings in Python, Java, C++ and more. toBinaryString(r); My guess is that you're using the term "decimal number" to (erroneously) refer to numbers containing a "decimal point". Then add your products to it: I want to multiply a * b: a = ['a', 'e', 'y'] b = [3, 2, 1] and get: c = ['a', 'a', 'a', 'e', 'e', 'y'] @WarrenWeckesser: And it is even given in the tutorial. In python there is no difference between "c" and 'c', both are strings of length one. println(count*"B"); I was just hoping there'd be some kind of string * int syntax – 1. Here, the result is a negative integer as both integers to be multiplied have different signs. The result is also a number, so you need to convert it if you want it as a string. It holds a numerical representation of the symbol (ASCII code). append("0"). 1 PHP - arithmetic operations using strings as operators. Serial. It doesn't matter - the int will be converted to decimal anyway: there isn't a *(decimal, int) operator, just *(int, int) and *(decimal, decimal). com/CodesbyUnnati/Solutions/blob/main/Programs/Multiply_Strings. Or you could cast as decimal(9,2) instead of int - either way ensures you get an accurate result. Let's see how we can tackle this problem in an easier way. append(integerObj. Example: String string1 = ". Here's the code I had written. Looking at Convert. because the large size integer can cause potential overflow but we are still covering this approach to provide a complete understanding of this method. ToInt32 help page you have the return value shows:. $ myString=$(printf "%10s");echo ${myString// /m} # echoes 'm' 10 times mmmmmmmmmm $ myString=$(printf "%10s");echo ${myString// /rep} # echoes 'rep' 10 times reprepreprepreprepreprepreprep Python - how to multiply characters in string by number after character. The reason I generally wouldn't advise using Andrey's answer is simply that the ToArray() call introduces superfluous overhead that is avoided with ASCII value of space is 32 so when you multiply by 32 i'ts giving 320. Then the output tells the user who won based off the lap times placed, and it needs to tell the user what the race time was. Hot Network Questions Even if you sum up smaller products in a number variable, that sum will eventually cross the limit of Number. char can be multiplied by integer in java. At How to multiply values from input? You need to multiply two values, which requires converting str to one of numeric types. Or if you know they're standard ASCII-style digits In 'a' * 4, the two pieces are used differently: the string is used as a string, and the number as a number. String str = "1234"; Integer result = new Integer(str); 4) Integer. parseInt() is a commonly used method to convert a string to an integer in Java. - Multiply both BigInts and restore the zeros you removed in step 1. I know i have to convert the string into something an integer would be able to use? I have this string: var sting = "500*500*500"; Now i'd like to calculate the numbers in the string just as they are. To tell the assember you want the first flavor, give mul an operand that is Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company To (properly) multiply an string by an integer, you split the string into characters, repeat each character a number of times equal to the integer, and then stick the characters back together. Example 3: “The product of three positive You want to print a string that depends an a variable. addition and multiplication of string in C++. Multiply Strings - Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. number + number = the sum of both numbers. str * n, it will produce the string n times concatenating with itself. Repeat. The methods used for this conversion are Integer. I have this: The multiplication operator (*) in Python is used to multiply numbers. Looping through a string, need the index of that string. String with an operator overload, but you could make a string wrapper class to do it. Expand Post Read Check if a Variable is a Number in Python. If your values are indeed floats, it would be interesting if you How to multiply strings? Ask Question Asked 8 years, 2 months ago. Multiply Strings in Python. If user enters string or characters it intval will change to zero Multiply string values. print("Hello world" * 5); to give the output: Hello world Hello world Hello world Hello world Hello world Now obviously I can't just multiply a string by 5, as I have done. Using long long int defeats the purpose. com/problems/multiply-strings/More vi There are two things that might happen. Net does not convert the variable of type double implicitly to a string. Parse(hrsWrkd); string grossPay = (hourlyRate * hours). I hope this helps. Python - How to make multiply a given number to a given string. Here is a Python example of how to multiply strings in Python. In school days we learn multiplication of two numbers by multiplying each digit of the first number with the last digit of the second number. length];//create a new int array to store the int values for (int i = 0; i < stringArray. number=input("Enter In C, a symbol between '' has a type char, a character, not a string. parseInt() and Integer. joel goldstick joel Can't get a decimal when multiplying a number by an integer from input. It looks like your =EUR column came in as a string, you are right, you will first need to convert this to a float in order to do any math on it. Concat(Enumerable. oh alright, How to fix this problem because they asking convert the string to integer and then multiply the both string value to return the answer as string – Deepak Ananth. Arithmetic on C++ strings. parseInteger(String) etc. Then you can simply multiply the two numbers. The value of s. repeat() Method. In addition, for monetary values, it is usually not a good idea to use floats. You need to first parse the strings into integers. If t1 and m1 are stringrepresentations of numbers you can convert them to numbers (chose Integer, Float, Double or whatever is needed in your application) and then multiply. That's literally part of the definition of the operation:. – * is undefined because t1 is a String and Strings cant be used in multiplication. parseInt(str); 2) Integer. If you want the number of characters (runes), use utf8. We can use the Stream API introduced in Java 8 to multiply a string and then join them at the end of the string. #include <sstream> std::string repeat(int n) { std::ostringstream os; for(int i = 0; i < n; i++) os << "repeat"; return os. The information is taken from submissions on an html form and I have written the code for taken the submitted information as the variables but I These days, the repeat string method is implemented almost everywhere. com/problems/multiply-strings/More vi First off, to repeat a string an integer number of times, you can use overloaded multiplication: >>> 'abc' * 7 'abcabcabcabcabcabcabc' So, to repeat a string until it's at least as long as the length you want, you calculate the appropriate number of repeats and put it on the right-hand side of that multiplication operator: char is an integral type. string Multiplication in C++. How to print the value of a variable next to a string, which the value of variable is an String str = "234 432 22 66 8 44 7 4 3 333"; String[] stringArray = str. ex) "123" would be (1+2+3)*2 You can use built-in function sum, list expansion and int to convert a digit to a string. In Python, you can use the * operator to multiply not only numbers but also lists and strings. 1 Multiplication in PHP. user = raw_input('Enter input: ') print user * 2 Look at the Python Documentation. 2. __mul__, my_list), although in this particular case, thanks to some optimizations in the byte code interpreter for simple int For example: dim STR1 as string = " " dim INT1 as integer = 4 dim STR2 as string = " " I would like to see the output as VS 2005 [RESOLVED] Can I “multiply” a string-VBForums Help The image shows the bash script has multiplicated the num1 and the num2 variables and printed the result on the terminal. For how_many we can use int cause count normally is integer. This is basically equivalent of raw_input in Python 2. find(x)+x) but when characters are duplicated in the string, you of course get the number of spaces to the first instance of that character. You're multiplying your string by -1, that's why you're getting an empty string. Python: Multiply a number in a string by a constant. I can convert the other integer in string, but I'm unable to multiply it. Viewed 4k times 6 . in this case, map((5). If you want to do the arithmetic in your shell, note printf(1) for x in string: print(" "*string. To get the if not isinstance(num, int): return None This returns None if the argument isn't an integer. I would recommend using Just multiply the input by two. Example of * operator: Let’s Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Just change your identifiers. generate() is called to create new I have just begun learning PHP, and I have been working on a practice page for finding the cubic volume of a cube. For example. txtNoTotalAff. valueOf(). You can do that like this: multipliedText. Here's w @DanAllen I agree with you about the fix variables, but still, the multiplication of numeric strings is exactly where I'm stuck. 2 How to multiply a number by itself X times? Multiply string values. 4 and "two") returns the sum of both multiplied. We have to multiply integer strings, so we need to find a solution. You can't multiply two strings. These days (early 2023) there are other ways to convert a number string to a number. Edit. I'm trying to complete the following exercise: Write a program to prompt the user for hours and rate per hour to compute gross pay. the value which should get added to the next product as you move to the left (in your original numbers, not the reversed ones). Strings can be concatenated (glued together) with the + operator, and repeated with *: How to Multiply String in Java. I can't convert the string into integer because it's resulting me into a boolean (when I'm using var_dump). 5 12. How could i multiply a string by a number to achieve n amount of repetitions of that string in a Labels caption, i. e: non-numeric values). If the integer is negative, we use its To (properly) multiply an string by an integer, you split the string into characters, repeat each character a number of times equal to the integer, and then stick the characters This Use Python Multiply Strings Tutorial explains how to multiply in python, multiply numbers in a string python, python multiply characters in string, How to multiply string Convert the two input numbers from strings to lists of integers. repeat() and StringBuffer. std::string also has a constructor that repeats given character a number of times. explanation: If one or both operands is string, then the plus is considered as string concatenation operator rather than adding numbers. ) using Long. Such numbers are not integers and cannot be parsed by Integer. T Let's say we have a text "Welcome to India". I don't know how to concat it when number is higher than 9 and then multiply eg. NSExpression *expression = [NSExpression expressionWithFormat:expressionFormat]; I am trying to add the digits from a string and multiply it by 2. In c language, those would semantically be very different. Modified 12 years, 8 months ago. Example. Print(time. I have a form where i need to multiply 3 different values to provide the desired result. But, I need the varchars that look like numbers: 1, 3, 5, 0. Interpreter["Number"]["4. 98111e+08. You can multiply a sequence by an integer, but not by a float. Value = value; } public static StringWrapper operator *(StringWrapper wrapper, int timesToRepeat Hello! So what I have done already was create 3 cars where the user can input the data. append() method of Java. Multiply Only Numeric Values in Python String. I want to convert a string to an int and I don't mean ASCII codes. In this section, we will see how to multiply two strings in C++ using a built-in method. Editorial note: The return value of Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company First, trying to do floating-point arithmetic with bc(1) without using the -l flag is bound to give you some funny answers:. charAt(0) in your example is the char version of the number 50 (the character code for '2'). – But you can write a function that takes a string and a number as argument, and return the repeated string. trim(). It's important to note that the multiply function considers 4 cases: The first 3 cases are just meant to allow you to manage bigger integers, preventing any of them to become higher than the BigInt max length during the multiplications, and lower than 1 during the divisions. the minus operator always try to convert both If you are multiplying integer values from user always use intval function so that you always have integer value. solution1 = (int) (num1 * num2); In android, TextView. System. I'd like to convert this string to standard math operations in Python, such that "2 + 2" would return 4. Provide details and share your research! But avoid . 25 Second, the $(()) is an attempt to do arithmetic in your shell; neither my bash nor dash can handle floating point numbers. anything along those I'm having trouble multiplying a string by a variable that is a integer. The arguments must either both be numbers, or one argument must be an integer and the other must be a sequence. I would like to elaborate on, and clarify Shravan Kumar's Answer using a full-fledged code. for x in string: print(" "*x+x) and. println(heart2*7); System. When you multiply a list or a string by an integer, Python repeats the content of that list or string the specified number of times. 1234-0 Dart multiply strings: In this post, we will learn how to multiply a string for n number of times. Integer is in as variable form because it is an input that is entered by the user. The language allows the functions with non-alpha-numeric names to be used in infix form (as operators). toString. Map<String,Integer> productPrices = new HashMap<String,Integer>(); This creates a container that will hold Integer values that can be looked up using a String. println(heart3*7); System. e if n = 5 then 's'*n= 'sssss' which would then become the labels caption. How to multiply two decimals of type string javascript. Is there an easy way to do this, or would I have to split on the spaces and parse each number/symbol manually, then do the math based on what I find? The intrinsic function ToExpression will convert its argument to an expression; if the argument is the string representation of a number the function will return the number. She needs to get the code to request a number, multiply it by 9 and show the result. formula = "" # looping through tuples of (x, 1) (y, 2) (z, 3) for val, var in zip(df1. Syntax: new_string = original How to multiply a number by itself X times? Related questions. intValue(); 3) Integer constructor. If we multiply the string for n times, i. tolaz dvno cqnkow sxmf ulei ebbku gwm ctukyn zgkkp yxmjy