Given a string str containing lowercase alphabets (a – z). The task is to print the string after rearranging some characters such that the string becomes non-palindromic. If its impossible to make the string non-palindrome then print -1.
Input: str = “abba”
Input: str = “zzz”
Approach: If all the characters in the string are same then no matter how you rearrange the characters, string will remain the same and will be palindromic. Now, if a non-palindromic arrangement exists, the best way to rearrange the characters is to sort the string which will form continuous segment of same characters and will never be palindromic. In order to reduce the time required to sort the string, we can store the frequencies of all the 26 characters and print them in sorted manner.
Below is the implementation of the above approach:
- Minimum cuts required to convert a palindromic string to a different palindromic string
- Minimum number of letters needed to make a total of n
- Check if the string contains consecutive letters and each letter occurs exactly once
- Smallest Greater (than S) String of length K whose letters are subset of S
- Find the count of palindromic sub-string of a string in its sorted form
- Find a palindromic string B such that given String A is a subsequense of B
- Check if a string contains a palindromic sub-string of even length
- Lexicographically first palindromic string
- Given a string, print all possible palindromic partitions
- Find all palindromic sub-strings of a given string | Set 2
- Print all palindromic partitions of a string
- Count All Palindromic Subsequence in a given String
- Count palindromic characteristics of a String
- Number of strings of length N with no palindromic sub string
- Find all distinct palindromic sub-strings of a given string
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