Ad
Silent139vs.gcesnik3

Non Repeating Character Optimization

Code
Diff
  • const firstNonRepeatingCharacter = (str) => {
  let nonRepeatingCharacter = '';
  const repeatingCharacters = {};
  
  for(let char of str) {
    repeatingCharacters[char] === undefined ? repeatingCharacters[char] = 1 : repeatingCharacters[char] += 1
  }
  for(const [key, value] of Object.entries(repeatingCharacters)) {
    if (nonRepeatingCharacter !== '') break;
    if (value === 1) nonRepeatingCharacter = key;
  }
  return nonRepeatingCharacter !== '' ? nonRepeatingCharacter : null;
};
    • const firstNonRepeatingCharacter = (str) => {
    • console.log("haha");
    • for (let i = 0; i < str.length; i++) {
    • let seenDuplicate = false;
    • for (let j = 0; j < str.length; j++) {
    • if (str[i] === str[j] && i !== j) {
    • seenDuplicate = true;
    • break;
    • }
    • }
    • if (!seenDuplicate) {
    • return str[i];
    • }
    • }
    • return null; // return null if no unique character is found
    • let nonRepeatingCharacter = '';
    • const repeatingCharacters = {};
    • for(let char of str) {
    • repeatingCharacters[char] === undefined ? repeatingCharacters[char] = 1 : repeatingCharacters[char] += 1
    • }
    • for(const [key, value] of Object.entries(repeatingCharacters)) {
    • if (nonRepeatingCharacter !== '') break;
    • if (value === 1) nonRepeatingCharacter = key;
    • }
    • return nonRepeatingCharacter !== '' ? nonRepeatingCharacter : null;
    • };