Leetcode 1040: Longest duplicate string

Longest duplicate string is binary search with hash

Binary search for the length, use Robin karp hash

Question about Leetcode 1040:

• I found this one helpful for Robin, thank you for sharing. You are the expert
• https://www.geeksforgeeks.org/rabin-karp-algorithm-for-pattern-searching/
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There is no pattern string, how to find which one to compare. Save all the same length one in the hashset? Rabin hash is to compare to given a pattern string.

Here is my gist saved. I will play Java code and see how it works.