Longest Substring without Repeating Characters
Explore how to identify the longest substring without repeating characters in a given string by applying the sliding window technique. Understand problem constraints and develop an efficient solution to optimize time and space complexity while practicing hands-on implementation.
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Statement
Given a string, input_str, return the length of the longest substring without repeating characters.
Constraints:
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input_str.length input_strconsists of English letters, digits, and spaces.
Examples
Understand the problem
Let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps us to check if you’re solving the correct problem:
Longest Substring Without Repeating Characters
What should be the output if the following string is given as an input?
str = “conceptoftheday”
8
6
5
13
Figure it out!
We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.
Try it yourself
Implement your solution in the following coding playground:
def find_longest_substring(input_str):# Replace this placeholder return statement with your codereturn -1