Minimum Characters to Add for Palindrome

To find the minimum number of characters to be added at the front of a string to make it a palindrome, we can use two approaches. The first approach checks all prefixes to find the longest palindromic prefix. The second approach utilizes the KMP algorithm's LPS array to efficiently find the longest palindromic prefix by concatenating the original string with its reverse. The result is the length of the input string minus the length of the longest palindromic prefix.

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