How to find all occurences of each substring in the given string.Please give me some suggestions
№ | Пользователь | Рейтинг |
---|---|---|
1 | tourist | 4009 |
2 | jiangly | 3831 |
3 | Radewoosh | 3646 |
4 | jqdai0815 | 3620 |
4 | Benq | 3620 |
6 | orzdevinwang | 3529 |
7 | ecnerwala | 3446 |
8 | Um_nik | 3396 |
9 | gamegame | 3386 |
10 | ksun48 | 3373 |
Страны | Города | Организации | Всё → |
№ | Пользователь | Вклад |
---|---|---|
1 | cry | 164 |
1 | maomao90 | 164 |
3 | Um_nik | 163 |
4 | atcoder_official | 160 |
5 | -is-this-fft- | 158 |
6 | awoo | 157 |
7 | adamant | 156 |
8 | TheScrasse | 154 |
8 | nor | 154 |
10 | Dominater069 | 153 |
How to find all occurences of each substring in the given string.Please give me some suggestions
Название |
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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.
Z-Function.
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.
actually i asked to have the count for every substring in the string
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.