Exes and Ohs

❓Exes and Ohs

Q. Check to see if a string has the same amount of 'x's and 'o's. The method must return a boolean and be case insensitive. The string can contain any char.

Examples input/output:

XO("ooxx") => true
XO("xooxx") => false
XO("ooxXm") => true
XO("zpzpzpp") => true // when no 'x' and 'o' is present should return true
XO("zzoo") => false

✔ Solution

//#my solution
const XO = str => {
  str = str.toLowerCase().split('');
  return str.filter(x => x === 'x').length === str.filter(x => x === 'o').length;
}

//#other solution
function XO(str) {
  let x = str.match(/x/gi);
  let o = str.match(/o/gi);
  return (x && x.length) === (o && o.length);
}