Longest Substring Without Repeats | Dataford Interview Questions

Explain how you would solve the Longest Substring Without Repeating Characters problem efficiently.

Implement length_of_longest_substring(s), which receives a string and returns the length of its longest substring containing no repeated characters. The expected solution should run in linear time.

Input and Output

Input: a string s.
Output: an integer representing the maximum valid substring length.

Constraints

0 <= len(s) <= 100000
s may contain lowercase letters, uppercase letters, digits, spaces, and symbols
The substring must consist of contiguous characters

Function Signature

def length_of_longest_substring(s):

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