sameFrequency.js

function sameFrequency(num1, num2) {
  let strNum1 = num1.toString();
  let strNum2 = num2.toString();
  if (strNum1.length !== strNum2.length) return false;

  let countNum1 = {};
  let countNum2 = {};

  for (let i = 0; i < strNum1.length; i++) {
    countNum1[strNum1[i]] = (countNum1[strNum1[i]] || 0) + 1;
  }

  for (let j = 0; j < strNum1.length; j++) {
    countNum2[strNum2[j]] = (countNum2[strNum2[j]] || 0) + 1;
  }

  for (let key in countNum1) {
    if (countNum1[key] !== countNum2[key]) return false;
  }

  return true;
}

console.log(sameFrequency("wrong", "grown"));
console.log(sameFrequency("grab", "crab"));