Solution: Longest Substring without Repeating Characters
Explore how to efficiently solve the problem of finding the longest substring without repeating characters by implementing a sliding window technique. Learn to use a hash map to track characters, update window positions, and optimize for O(n) time complexity. Understand each step to confidently apply this pattern in coding interviews and enhance your problem-solving skills.
Statement
Given a string, str, return the length of the longest substring without repeating characters.
Constraints:
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str.length