Longest Substring without Repeating Characters

Find the length of the longest substring of a given string without repeating characters.

Input: abccabcabcc

Output: 3

Explanation: longest substrings are abc, cab, both of length 3

Input: aaaabaaa

Output: 2

Explanation: ab is the longest substring, length 2

Try it yourself

Title

Script

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Contrary to popular belief, Lorem Ipsum is not simply random text.

1  >>> a = [1, 2, 3]
2  >>> a[-1]
3  3

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