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Reducing array elements to all odds in JavaScript
Problem
We are required to write a JavaScript function that takes in an array. Our function should change the array numbers like this −
- If the number is odd, leave it changed.
- If the number is even, subtract 1 from it.
And we should return the new array.
Example
Following is the code −
const arr = [5, 23, 6, 3, 66, 12, 8];
const reduceToOdd = (arr = []) => {
const res = [];
for(let i = 0; i < arr.length; i++){
const el = arr[i];
if(el % 2 === 1){
res.push(el);
}else{
res.push(el - 1);
};
};
return res;
};
console.log(reduceToOdd(arr));Output
Following is the console output −
[ 5, 23, 5, 3, 65, 11, 7 ]
Updated on: 20-Apr-2021
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