Longest Substring Problem | Dataford Interview Questions

Solve a common coding problem, such as finding the longest substring without repeating characters.

Implement length_of_longest_substring(s), which returns the length of the longest substring containing no repeated characters. The input is a string, and the output is an integer. Aim for an O(n) solution using a sliding window.

Constraints

0 <= len(s) <= 10^4
s contains ASCII characters
Return the length, not the substring itself

Function Signature

def length_of_longest_substring(s):

Your question is Longest Substring Problem. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Solve a common coding problem, such as finding the longest substring without repeating characters.

Constraints

0 <= len(s) <= 10^4
s contains ASCII characters
Return the length, not the substring itself

Function Signature

def length_of_longest_substring(s):

Your question is Longest Substring Problem. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.