nidzovito

// Given a string "input", find the length of the longest substring without repeating characters.

const lengthOfLongestSubstring = (input = "") => {
  const chars = input.split("");
  let buffer = new Map(); // stores the last index for each encountered character
  let maxLen = 0;

  for (let index = 0; index < chars.length; index++) {
    const char = chars[index];
    if (!buffer.has(char)) {