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   What is the longest common substring?

   • The longest common substring is “abcd” and is of length 4. The longest common substring is “abcdez” and is of length 6. Let m and n be the lengths of the first and second strings respectively. A simple solution is to one by one consider all substrings of the first string and for every substring check if it is a substring in the second string.

   Longest Common Substring | DP-29 - GeeksforGeeks

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   How to find the longest common substring in O(m*n) time?

   • Dynamic Programming can be used to find the longest common substring in O (m*n) time. The idea is to find the length of the longest common suffix for all substrings of both strings and store these lengths in a table. The longest common suffix has following optimal substructure property. If last characters match, then we reduce both lengths by 1

   Longest Common Substring | DP-29 - GeeksforGeeks

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   Where does the longest repeated substring end?

   • We can see in figure that, longest repeated substring will end at the internal node which is farthest from the root (i.e. deepest node in the tree), because length of substring is the path label length from root to that internal node.

   Suffix Tree Application 3 – Longest Repeated Substring

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   How to check if a string is a substring?

   • A simple solution is to one by one consider all substrings of the first string and for every substring check if it is a substring in the second string. Keep track of the maximum length substring. There will be O (m^2) substrings and we can find whether a string is substring on another string in O (n) time (See this).

   Longest Common Substring | DP-29 - GeeksforGeeks

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2. stackoverflow.com › questions › 78723353Longest Repeating Substring With Replacement - Stack Overflow

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   Jul 9, 2024 · I am looking to find the longest length of a string of characters whose characters can only be replaced "k" number of times. So if we have "AABCCA" and k = 2, then the output would be 4, because at "AAAACA" i.e. changing "..BC.."

3. www.geeksforgeeks.org › longest-common-substring-dp-29Longest Common Substring | DP-29 - GeeksforGeeks

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   Jul 4, 2024 · Explanation: The longest common substring is “abcdez” and is of length 6. Approach: Let m and n be the lengths of the first and second strings respectively. A simple solution is to one by one consider all substrings of the first string and for every substring check if it is a substring in the second string.

4. Videos

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     33:40

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     Longest Duplicate Substring | LeetCode 1044 | Rabin Karp Algorithm

     19 Jun 2020

     11.1K views

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     29:42

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     Longest Duplicate Substring | TRIE | Rolling Hash | Binary Search | Leetcode #1044

     19 Jun 2020

     38.8K views

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     46:32

     youtube.com

     Longest Duplicate Substring | Rabin Karp Rolling Hash | Text Processing

     20 Aug 2021

     2.8K views

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5. www.youtube.com › watchLongest repeating and non-overlapping substring | GFG POTD ...

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   Jul 3, 2024 · Join us in unraveling today's GeeksforGeeks Problem of the Day - "Longest repeating and non-overlapping substring" In this video, we dissect the problem, explore efficient algorithms,...

   • Video Duration: 19 min

   • Author: FCodes

6. cp-algorithms.com › string › string-hashingString Hashing - Algorithms for Competitive Programming

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   Jul 4, 2024 · To solve this problem, we iterate over all substring lengths $l = 1 \dots n$. For every substring length $l$ we construct an array of hashes of all substrings of length $l$ multiplied by the same power of $p$. The number of different elements in the array is equal to the number of distinct substrings of length $l$ in the string. This number is ...

7. www.geeksforgeeks.org › substring-in-javaSubstring in Java - GeeksforGeeks

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   Jul 19, 2024 · Given a string S consisting of N lowercase characters, the task is to find the length of the longest substring consisting of each vowel an even number of times Examples: Input: S= "bcbcbc"Output: 6Explanation:Consider the substring S[0, 5] i.e., "bcbcbc" is the longest substring because all vowels: a, e, i, o and u appear 0(which is even) number of

8. diguage.github.io › leetcode › 1044-longestLeetCode 解题笔记

   diguage.github.io › leetcode › 1044-longest

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   Jul 11, 2024 · LeetCode - Longest Duplicate Substring Given a string S , consider all duplicated substrings : (contiguous) substrings of S that occur 2 or more times. (The occurrences may overlap.)

9. dev.to › rivea0 › leetcode-meditations-longestLeetCode Meditations: Longest Palindromic Substring - DEV ...

   dev.to › rivea0 › leetcode-meditations-longest

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   Jul 12, 2024 · Let's start with the description for Longest Palindromic Substring: Given a string s, return the longest palindromic substring in s. For example: Input: s = "babad" Output: "bab" Explanation: "aba" is also a valid answer. Or: Input: s = "cbbd" Output: "bb".