Given two strings s1 and s2, check whether s2 is a rotation of s1.
Input : ABACD, CDABA Output : True Input : GEEKS, EKSGE Output : True
We have discussed an approach in earlier post which handles substring match as a pattern. In this post, we will be going to use KMP algorithm’s lps (longest proper prefix which is also suffix) construction, which will help in finding the longest match of the prefix of string b and suffix of string a. By which we will know the rotating point, from this point match the characters. If all the characters are matched, then it is a rotation, else not.
Below is the basic implementation of the above approach.
Time Complexity : O(n)
Auxiliary Space : O(n)
- A Program to check if strings are rotations of each other or not
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- Meta Strings (Check if two strings can become same after a swap in one string)
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- Check if two strings are permutation of each other
- Program to check if two strings are same or not
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- Check whether two strings are anagram of each other
- Check if two given strings are isomorphic to each other
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- Check whether two strings are equivalent or not according to given condition
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- Check if all the palindromic sub-strings are of odd length