C++ Program to Check if all rows of a matrix are circular rotations of each other
Given a matrix of n*n size, the task is to find whether all rows are circular rotations of each other or not.
Input: mat = 1, 2, 3 3, 1, 2 2, 3, 1 Output: Yes All rows are rotated permutation of each other. Input: mat = 1, 2, 3 3, 2, 1 1, 3, 2 Output: No Explanation : As 3, 2, 1 is not a rotated or circular permutation of 1, 2, 3
The idea is based on below article.
A Program to check if strings are rotations of each other or not
- Create a string of first row elements and concatenate the string with itself so that string search operations can be efficiently performed. Let this string be str_cat.
- Traverse all remaining rows. For every row being traversed, create a string str_curr of current row elements. If str_curr is not a substring of str_cat, return false.
- Return true.
Below is the implementation of above steps.
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