LeetCode 1208. Get Equal Substrings Within Budget — JavaScript

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https://leetcode.com/problems/get-equal-substrings-within-budget/description/?envType=daily-question&envId=2024-05-29

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var equalSubstring = function(s, t, maxCost) {
    let n = s.length, start = 0, currentCost = 0, maxLength = 0;
    for (let end = 0; end < n; end++) {
        currentCost += Math.abs(s.charCodeAt(end) - t.charCodeAt(end));

        while (currentCost > maxCost) {
            currentCost -= Math.abs(s.charCodeAt(start) - t.charCodeAt(start));
            start++;
        }

        maxLength = Math.max(maxLength, end - start + 1);
    }

    return maxLength;
};

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