How do you find a repeated substring in a python string?

You can do this by repeating the substring a certain number of times and testing if it is equal to the original string. Start by building an array of prefixes. Do a reverse traversal and stop the first time you encounter something that repeats in your string (i.e. has a str. count()>1 .

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## How do you check if a string is repeated or not?

Approach: If len(b) % len(a) != 0 then print -1 since b cannot be generated by repeating a. Otherwise, set count = len(b) / len(a) and repeat the count several times.

## How to find the length of the longest repeating substring?

To avoid overlap, we must ensure that the length of the suffix is less than (ji) at any time. The maximum value of LCSRe(i,j) gives the length of the longest repeated substring and the substring itself can be found using the length and the common suffix trailing index. Below is the implementation of the recurrence.

## What is the longest substring in the string BBBB?

For “BBBB”, the longest substring is “B”, with a length of 1. For “GEEKSFORGEEKS”, there are two longest substrings shown in the diagrams below, with a length of 7 . The desired time complexity is O(n) where n is the length of the string. Recommended: Solve in “PRACTICE” first, before moving on to the solution.

## What is the longest substring of abdefgabef?

For “ABDEFGABEF”, the longest substring is “BDEFGA” and “DEFGAB”, with a length of 6. For “BBBB”, the longest substring is “B”, with a length of 1. For “GEEKSFORGEEKS”, there is two longer substrings shown in the below diagrams, with length 7

## What is the longest repeated subsequence in the world?

The longest repeating subsequence is ATCG. ATACTCGG A. ATACTCGG A. Note that repeated characters have a different index in the input string. The longest repeated subsequence problem is a classic variation of the longest common subsequence (LCS) problem.