Determining sum of array as even or odd in JavaScript

Problem

We are required to write a JavaScript function that takes in an array of integers arr. Our function should return the string ‘odd’ if the sum of all the elements of the array is odd or ‘even’ if it’s even.

Example

Following is the code −

 Live Demo

const arr = [5, 1, 8, 4, 6, 9];
const assignSum = (arr = []) => {
   const sum = arr.reduce((acc, val) => {
      return acc + val;
   }, 0);
   const isSumEven = sum % 2 === 0;
   return isSumEven ? 'even' : 'odd';
};
console.log(assignSum(arr));

Output

Following is the console output −

odd

AmitDiwan

Updated on: 17-Apr-2021

274 Views

Kickstart Your Career

Get certified by completing the course

Get Started