Breaking News: Grepper is joining You.com. Read the official announcement!

longest palindromic subsequence

Add Answer

Repulsive Rat answered on February 16, 2021 Popularity 10/10 Helpfulness 1/10

answer longest palindromic subsequence

related longest palindromic substring

related Longest Palindromic Substring

longest palindromic subsequence

Comment

-1

 public int longestPalindromeSubseq(String s) {
        String s2=reverse(s);
        int n=s.length();
        int m=s2.length();
        int dp[][]=new int[n+1][m+1];
        for(int i=0;i<=n;i++)
        {
            for(int j=0;j<=m;j++)
            {
                if(i==0 || j==0)
                {
                    dp[i][j]=0;
                }
                else
                {
                    if(s.charAt(i-1)==s2.charAt(j-1))
                        dp[i][j]=1+dp[i-1][j-1];
                    else
                    {
                        dp[i][j]=Math.max(dp[i-1][j],dp[i][j-1]);
                    }
                }
            }
        }
        return dp[n][m];
    }
}

Popularity 10/10 Helpfulness 1/10 Language whatever

Source: leetcode.com

Tags: subsequence whatever

Link to this answer
Share Copy Link

Contributed on Feb 16 2021

Repulsive Rat

0 Answers Avg Quality 2/10

Closely Related Answers

longest palindromic substring

Comment

<script>
 
// A O(n^2) time and O(1) space program to
// find the longest palindromic substring
// easy to understand as compared to previous version.
 
// A utility function to print
// a substring str[low..high]
// This function prints the
// longest palindrome substring (LPS)
// of str[]. It also returns the
// length of the longest palindrome
function longestPalSubstr(str)
{
    let n = str.length; // calculating size of string
    if (n < 2)
        return n; // if string is empty then size will be 0.
                // if n==1 then, answer will be 1(single
                // character will always palindrome)
 
    let maxLength = 1,start=0;
    let low, high;
    for (let i = 0; i < n; i++) {
        low = i - 1;
        high = i + 1;
        while ( high < n && str[high] == str[i]) //increment 'high'                               
            high++;
     
        while ( low >= 0 && str[low] == str[i]) // decrement 'low'               
            low--;
     
        while (low >= 0 && high < n && str[low] == str[high]){
            low--;
            high++;
        }
 
        let length = high - low - 1;
        if (maxLength < length) {
            maxLength = length;
            start=low+1;
        }
    }
     
    document.write("Longest palindrome substring is: ");
    document.write(str.substring(start,maxLength+start));
    return maxLength;
}
 
// Driver program to test above functions
 
let str = "forgeeksskeegfor";
document.write("</br>","Length is: " + longestPalSubstr(str),"</br>");
 
// This is code is contributed by shinjanpatra
 
</script>

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: www.geeksforgeeks.org

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Apr 12 2022

Fragile Frog

0 Answers Avg Quality 2/10

longest palindromic substring

Comment

public String longest_palindrome(String s) {
	// if length of string is less than 1 return empty string
	if (s == null || s.length() < 1) return "";
	int start = 0, end = 0;
	for (int i = 0; i < s.length(); i++) {
		int len1 = expand_around_center(s, i, i);
		int len2 = expand_around_center(s, i, i + 1);
		int len = Math.max(len1, len2);
		if (len > end - start) {
			start = i - (len - 1) / 2;
			end = i + len / 2;
		}
	}
	// return longest palindromic substring
	return s.substring(start, end + 1);
}

private int expand_around_center(String s, int left, int right) {
	int L = left, R = right;
	while (L >= 0 && R < s.length() && s.charAt(L) == s.charAt(R)) {
		L--;
		R++;
	}
	return R - L - 1;
}

public static void main(){
	String word = "findnitianhere";
	System.out.println(longest_palindrome(word));
}

Popularity 9/10 Helpfulness 1/10 Language whatever

Source: www.scaler.com

Tags: substring subs

Link to this answer
Share Copy Link

Contributed on Dec 18 2022

Careful Cobra

0 Answers Avg Quality 2/10

Longest Palindromic Substring

Comment

class Solution {
public:
    string longestPalindrome(string s) {
        
    }
};

Popularity 9/10 Helpfulness 1/10 Language cpp

Source: Grepper

Tags: c++

Link to this answer
Share Copy Link

Contributed on Aug 17 2022

CodeBlack reactor

0 Answers Avg Quality 2/10

Longest Palindromic Substring

Comment

class Solution {
    public String longestPalindrome(String s) {
        
    }
}

Popularity 9/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java

Link to this answer
Share Copy Link

Contributed on Aug 17 2022

CodeBlack reactor

0 Answers Avg Quality 2/10

Longest Palindromic Substring

Comment


char * longestPalindrome(char * s){

}

Popularity 9/10 Helpfulness 1/10 Language c

Source: Grepper

Tags: c substring subs

Link to this answer
Share Copy Link

Contributed on Aug 17 2022

CodeBlack reactor

0 Answers Avg Quality 2/10

Longest Palindromic Substring

Comment

/**
 * @param {string} s
 * @return {string}
 */
var longestPalindrome = function(s) {
    
};

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Aug 17 2022

CodeBlack reactor

0 Answers Avg Quality 2/10

Longest Palindromic Substring

Comment

# @param {String} s
# @return {String}
def longest_palindrome(s)
    
end

Popularity 9/10 Helpfulness 1/10 Language ruby

Source: Grepper

Tags: ruby

Link to this answer
Share Copy Link

Contributed on Aug 17 2022

CodeBlack reactor

0 Answers Avg Quality 2/10

Longest Palindromic Substring

Comment

class Solution {

    /**
     * @param String $s
     * @return String
     */
    function longestPalindrome($s) {
        
    }
}

Popularity 9/10 Helpfulness 1/10 Language php

Source: Grepper

Tags: php

Link to this answer
Share Copy Link

Contributed on Aug 17 2022

CodeBlack reactor

0 Answers Avg Quality 2/10

Longest Palindromic Substring

Comment

function longestPalindrome(s: string): string {

};

Popularity 9/10 Helpfulness 1/10 Language typescript

Source: Grepper

Tags: substring subs

Link to this answer
Share Copy Link

Contributed on Aug 17 2022

CodeBlack reactor

0 Answers Avg Quality 2/10

longest palindromic subsequence

Contents

More Related Answers

longest palindromic subsequence

Closely Related Answers

longest palindromic substring

longest palindromic substring

Longest Palindromic Substring

Longest Palindromic Substring

Longest Palindromic Substring

Longest Palindromic Substring

Longest Palindromic Substring

Longest Palindromic Substring

Longest Palindromic Substring

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.