Minimum Window Substring In JavaScript
Minimum Window Substring: Find min window in `s` containing all chars of `t`. Use sliding window approach with freq maps. Expand & shrink window to find smallest valid substring.
Javascript Code
/**
* @param {string} s - The input string
* @param {string} t - The target string containing required characters
* @return {string} - The minimum window in s that contains all characters of t
*/
var minWindow = function (s, t) {
if (t === "") return ""; // Edge case: if t is empty, return an empty string
let tMap = {}; // Map to store the frequency of characters in t
// Populate tMap with the count of each character in t
for (let letter of t) {
tMap[letter] = (tMap[letter] || 0) + 1;
}
let currentMap = {}; // Map to track characters in the...