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Repeating only even numbers inside an array in JavaScript
We are required to write a JavaScript function that should repeat the even number inside the same array.
For example, given the following array −
const arr = [1, 2, 5, 6, 8];
Output
We should get the output −
const output = [1, 2, 2, 5, 6, 6, 8, 8];
Therefore, let’s write the code for this function −
Example
The code for this will be −
const arr = [1, 2, 5, 6, 8];
const repeatEvenNumbers = arr => {
let end = arr.length -1;
for(let i = end; i > 0; i--){
if(arr[i] % 2 === 0){
arr.splice(i, 0, arr[i]);
};
};
return arr;
};
console.log(repeatEvenNumbers(arr));Output
The output in the console will be −
[ 1, 2, 2, 5, 6, 6, 8, 8 ]
Updated on: 22-Oct-2020
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