shinghalrishabh's blog

Strings
By shinghalrishabh, history, 9 years ago, In English

How to find all occurences of each substring in the given string.Please give me some suggestions

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9 years ago, # |
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you can easily make that in O(N*N*N) time using Brute force. Then using hashes it can be reduced to O(N*N). You cAn make that in O(N*N) using KMP.

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9 years ago, # |
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Z-Function.

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9 years ago, # |
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If I understood the problem correctly, then using suffix array + lcp should give performance between O(N) and depending on chosen algorithm for searching suffix array.

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    9 years ago, # ^ |
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    actually i asked to have the count for every substring in the string

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      9 years ago, # ^ |
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      Yes, there is no way of doing that in O(N) as there can be ~ N2 different substrings. I was thinking of problem where I had to count number of different substrings.

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