Longest Substring without Repeating Characters
Explore how to solve the problem of finding the longest substring without repeating characters by applying the sliding window technique. This lesson helps you understand the problem constraints, approach the solution logically, and practice implementing it in Go. You'll develop skills to efficiently handle common interview questions involving substrings and character uniqueness.
We'll cover the following...
Statement
Given a string, str, return the length of the longest substring without repeating characters.
Constraints:
-
str.length 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?
s = “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:
package mainfunc findLongestSubstring(str string) int {// Replace this placeholder return statement with your codereturn -1}