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

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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 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))

Which algorithm is used to find the longest palindromic substring in a string?

Manacher’s algorithm
In this article, we will talk about Manacher’s algorithm which finds Longest Palindromic Substring in linear time. One way (Set 2) to find a palindrome is to start from the center of the string and compare characters in both directions one by one.

What is the largest palindrome?

The longest palindrome in English is often considered tattarrattat, coined by James Joyce in his 1922 Ulysses to imitate the sound of a knock on the door. That’s 12 letters.

How do I print the longest palindromic subsequence?

Print Longest Palindromic Subsequence

  1. Reverse the given sequence and store the reverse in another array say rev[0..n-1]
  2. LCS of the given sequence and rev[] will be the longest palindromic sequence.
  3. Once we have found LCS, we can print the LCS.

What is the largest 3 digit palindrome?

Two loops each range from 100 to 999 for 3-digit number. Then we check the product and record the maximum palindrome. The answer is: 906609.

What is the longest palindromic sentence?

World’s longest palindrome?

  • In honor of the 20th of February, 2002, a palindromic date, Peter Norvig designed his worlds longest unique palindromic sentence of 21,012 words.
  • Norvig set himself the task to find a palindrome that consisted of only unique words.

How do you find the longest palindromic subsequence in an array?

How do you solve a palindrome problem?

Palindrome number algorithm

  1. Get the number to check for palindrome.
  2. Hold the number in temporary variable.
  3. Reverse the number.
  4. Compare the temporary number with reversed number.
  5. If both numbers are same, print “palindrome number”
  6. Else print “not palindrome number”

What is the largest 4 digit palindrome that is a multiple of 6?

8778
When we get to 8778, we see that the digit-sum is 30, which is divisible by 3. Therefore, 8778 is the largest four-digit palindrome divisible by 6.