Longest Substring Without Repeating Characters

[vishwa-0315]

LeetCode Username

vishwa_7

Problem Number, Title, and Link

Longest Substring Without Repeating Characters,https://leetcode.com/problems/longest-substring-without-repeating-characters/submissions/1780963433

Bug Category

Problem constraints

Bug Description

Longest Substring Without Repeating Characters

Language Used for Code

Java

Code used for Submit/Run operation

class Solution {
    public int lengthOfLongestSubstring(String s) {
        int n = s.length();
        int[] freq = new int[128];
        int left = 0, right = 0, maxLen = 0;
        while (right < n) {
            char c = s.charAt(right);
            freq[c]++;
            while (freq[c] > 1) {
                char d = s.charAt(left);
                freq[d]--;
                left++;
            }
            maxLen = Math.max(maxLen, right - left + 1);
            right++;
        }
        return maxLen;
    }
}

Expected behavior

Longest Substring Without Repeating Characters
it will not repeat the substring

Screenshots

No response

Additional context

No response