js.js

function makePalindrome(s, startindex, endindex, subs) {
  let result = "";
  for (let i = 0; i < startindex.length; i++) {
    let substring = s.substring(startindex[i], endindex[i] + 1);
    let count = 0;
    let charMap = new Map();
    for (let j = 0; j < substring.length; j++) {
      charMap.set(substring.charAt(j), charMap.get(substring.charAt(j)) + 1 || 1);
    }
    for (let [char, freq] of charMap) {
      if (freq % 2 === 1) {
        count++;
      }
    }
    if (count > subs[i]) {
      result += "0";
    } else {
      result += "1";
    }
  }
  return result;
}

function palindromeChecker(s, startindex, endindex, subs) {
let result = '';
for (let i = 0; i < startindex.length; i++) {
let sub = s.substring(startindex[i], endindex[i] + 1);
let count = new Array(26).fill(0);
for (let j = 0; j < sub.length; j++) {
count[sub.charCodeAt(j) - 97]++;
}
let oddCount = 0;
for (let j = 0; j < 26; j++) {
if (count[j] % 2 !== 0) {
oddCount++;
}
}
if (oddCount <= subs[i] * 2 + 1) {
result += '1';
} else {
result += '0';
}
}
return result;
}