Given a string str, the task is to find whether the string is a palindrome or not in Java without using library methods.
Input: str = “abba”
Input: str = “geeks”
Approach: Take two pointers i pointing to the start of the string and j pointing to the end of the string. Keep incrementing i and decrementing j while i < j and at every step check whether the characters at these pointers are same or not. If not then the string is not a palindrome else it is.
Below is the implementation of the above approach:
- C Program to Check if a Given String is Palindrome
- Python program to check if a string is palindrome or not
- TCP Client-Server Program to Check if a Given String is Palindrome
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- Java program to check palindrome (using library methods)
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- Check if a given string is a rotation of a palindrome
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- Check if it is possible to create a palindrome string from given N
- Check if any anagram of a string is palindrome or not
- Check if there exists any sub-sequence in a string which is not palindrome
- Recursive function to check if a string is palindrome
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Improved By : nishantv