Minimum characters to be added at front to make string palindrome
Hard Accuracy: 43.52%
Submissions: 1853 Points: 8
Given string str of length N. The task is to find the minimum characters to be added at front to make string palindrome.
Note: A palindrome is a word which reads the same backward as forward. Example : madam.
Example 1:
Input:
S = "abc"
Output: 2
Explanation:
Add 'b' and 'c' at front of above string to make it
palindrome : "cbabc"
Example 2:
Input:
S = "aacecaaaa"
Output: 2
Your Task:
You don't need to read input or print anything. Your task is to complete the function minChar() which takes a string S and returns an integer as output.
Expected Time Complexity: O(N) Expected Auxiliary Space: O(N)
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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