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Finding the only even or the only odd number in a string of space separated numbers in JavaScript
Problem
We are required to write a JavaScript function that takes in a string that contains numbers separated by spaces.
The string either contains all odd numbers and only one even number or all even numbers and only one odd number. Our function should return that one different number from the string.
Example
Following is the code −
const str = '2 4 7 8 10';
const findDifferent = (str = '') => {
const odds = [];
const evens = [];
const arr = str
.split(' ')
.map(Number);
arr.forEach(num => {
if(num % 2 === 0){
evens.push(num);
}else{
odds.push(num);
};
});
return odds.length === 1 ? odds[0] : evens[0];
};
console.log(findDifferent(str));Output
Following is the console output −
7
Updated on: 20-Apr-2021
334 Views
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