How do you find the longest palindromic substring in a string?

How do you find the longest palindromic substring in a string?

Approach: The simple approach is to check each substring whether the substring is a palindrome or not. To do this first, run three nested loops, the outer two loops pick all substrings one by one by fixing the corner characters, the inner loop checks whether the picked substring is palindrome or not.

Which Algorithm is used to find the longest palindrome?

Manacher’s Algorithm
Manacher’s Algorithm helps us find the longest palindromic substring in the given string. It optimizes over the brute force solution by using some insights into how palindromes work.

How do I find the longest palindrome in Java?

(IN JAVA)

1. class Main.
2. {
3. public static String longestPalindrome(String X, String Y, int m, int n, int[][] T)
4. {
5. if (m == 0 || n == 0) {
6. return “”;
7. }
8. if (X.charAt(m – 1) == Y.charAt(n – 1))

How do you find the longest palindrome in a string python?

Longest Palindromic Substring in Python

1. Define one square matrix of order same as the length of string, and fill it with False.
2. Set the major diagonal elements as true, so DP[i, i] = True for all i from 0 to order – 1.
3. start := 0.
4. for l in range 2 to length of S + 1.
5. return a substring of from index start to start + max_len.

How do you find the longest palindrome in an array?

Method 2:

1. Set a variable currentMax = -1 and start traversing the array.
2. If current element arr[i] > currentMax and arr[i] is a palindrome.
3. Then set currentMax = arr[i].
4. Print currentMax in the end.

How do you find a substring palindrome?

For each letter in the input string, start expanding to the left and right while checking for even and odd length palindromes. Move to the next letter if we know a palindrome doesn’t exist. We expand one character to the left and right and compare them. If both of them are equal, we print out the palindrome substring.