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2018-10-12 15:37:13 -04:00
---
title: Repeat a String Repeat a String
---
# Repeat a String Repeat a String
---
## Problem Explanation
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The program is very simple, we have to take a variable and return that variable being repeated certain amount of times. No need to add space or anything, just keep repeating it into one single string.
#### Relevant Links
* <a href='https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String' target='_blank' rel='nofollow'>Global String Object</a>
---
## Hints
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### Hint 1
The program is very simple, we have to take a variable and return that variable being repeated certain amount of times. No need to add space or anything, just keep repeating it into one single string.
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### Hint 2
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You can't edit strings, you will need to create a variable to store the new string.
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### Hint 3
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Create a loop to repeat the code as many times as needed.
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### Hint 4
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Make the variable created store the current value and append the word to it.
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---
## Solutions
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<details><summary>Solution 1 (Click to Show/Hide)</summary>
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```js
function repeatStringNumTimes(str, num) {
var accumulatedStr = "";
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while (num > 0) {
accumulatedStr += str;
num--;
}
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return accumulatedStr;
}
```
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#### Code Explanation
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* Create an empty string variable to store the repeated word.
* Use a while loop or for loop to repeat code as many times as needed according to `num`
* Then we just have to add the string to the variable created on step one, and increase or decrease `num` depending on how you set the loop.
* At the end of the loop, return the variable for the repeated word.
#### Relevant Links
* <a>JS while Loop</a>
* <a href='https://forum.freecodecamp.com/t/javascript-for-loop/14666s-Explained' target='_blank' rel='nofollow'>JS For Loops Explained</a>
</details>
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<details><summary>Solution 2 (Click to Show/Hide)</summary>
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```js
function repeatStringNumTimes(str, num) {
if (num < 1) {
return "";
} else if (num === 1) {
return str;
} else {
return str + repeatStringNumTimes(str, num - 1);
}
}
```
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#### Code Explanation
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* This solution uses recursion.
* We check if `num` is negative and return an empty string if true.
* Then we check if it's equal to 1 and in that case we return the string itself.
* If not, we add the string to a call of our function with `num` being decreased by 1, which will add another `str` and another.. until eventually `num` is 1\. And return that whole process.
#### Relevant Links
* <a href='https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Functions#Recursion' target='_blank' rel='nofollow'>Functions - Recursion</a>
</details>
<details><summary>Solution 3 (Click to Show/Hide)</summary>
```js
function repeatStringNumTimes(str, num) {
return num > 0 ? str.repeat(num) : "";
}
repeatStringNumTimes("abc", 3);
```
#### Code Explanation
* This solution takes a declarative approach.
* It is similar to the third solution, except it uses the ternary operator form of the `if` statement.
#### Relevant Links
* <a href='https://forum.freecodecamp.com/t/javascript-ternary-operator/15973' target='_blank' rel='nofollow'>JS Ternary</a>
</details>