From b5ed6ba70ed9a9c695f1c222bb1f26c679297ab8 Mon Sep 17 00:00:00 2001
From: Rishiraj <52316252+Rishiraj122@users.noreply.github.com>
Date: Fri, 2 Oct 2020 12:28:16 +0530
Subject: [PATCH 1/2] Added Longest Pallindromic Subsequence in Java

---
 LongestPallindromicSubsequenc.java | 55 ++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 LongestPallindromicSubsequenc.java

diff --git a/LongestPallindromicSubsequenc.java b/LongestPallindromicSubsequenc.java
new file mode 100644
index 0000000..00dc870
--- /dev/null
+++ b/LongestPallindromicSubsequenc.java
@@ -0,0 +1,55 @@
+import java.util.*;
+import java.lang.*;
+import java.io.*;
+
+class LongestPallindromicSubsequenc{
+
+    int max(int a, int b)
+    {
+        return (a>b ? a:b);
+    }
+
+    int LCS(int n, char[] arr, char[] b){
+
+        int[][] dp=new int[n+1][n+1];
+
+        for(int i=0;i<n;i=i+1){
+            for(int j=0;j<n;j=j+1){
+                dp[i][0]=0;
+                dp[0][j]=0;
+            }
+        }
+
+        for(int i=1;i<=n;i=i+1){
+            for(int j=1;j<=n;j=j+1){
+                if(arr[i-1]==b[j-1]){
+                    dp[i][j]=dp[i-1][j-1]+1;
+                }
+                else{
+                    dp[i][j]=max(dp[i-1][j],dp[i][j-1]);
+                }
+            }
+        }
+
+        return dp[n][n];
+    }
+
+    public static void main(String args[]){
+        Scanner sc=new Scanner(System.in);
+        int testcases=sc.nextInt();
+        while(testcases-->0){
+            String str=sc.next();
+            int n=str.length();
+            char[] arr=str.toCharArray();
+            char[] b=new char[n];
+
+            for(int i=0;i<n;i=i+1){
+                b[i]=arr[n-i-1];
+            }
+
+            LongestPallindromicSubsequenc LPS=new LongestPallindromicSubsequenc();
+            int result=LPS.LCS(n, arr, b);
+            System.out.println(result);
+        }
+    }
+}
\ No newline at end of file

From a09dcd6318ca026b9f64d7f512f607ff1a29908c Mon Sep 17 00:00:00 2001
From: Rishiraj <52316252+Rishiraj122@users.noreply.github.com>
Date: Fri, 2 Oct 2020 12:54:45 +0530
Subject: [PATCH 2/2] Added Dynamic Programming Folder and added the LPS algo
 in it

---
 .../LongestPallindromicSubsequenc.java        | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Dynamic Programming/LongestPallindromicSubsequenc.java

diff --git a/Dynamic Programming/LongestPallindromicSubsequenc.java b/Dynamic Programming/LongestPallindromicSubsequenc.java
new file mode 100644
index 0000000..00dc870
--- /dev/null
+++ b/Dynamic Programming/LongestPallindromicSubsequenc.java	
@@ -0,0 +1,55 @@
+import java.util.*;
+import java.lang.*;
+import java.io.*;
+
+class LongestPallindromicSubsequenc{
+
+    int max(int a, int b)
+    {
+        return (a>b ? a:b);
+    }
+
+    int LCS(int n, char[] arr, char[] b){
+
+        int[][] dp=new int[n+1][n+1];
+
+        for(int i=0;i<n;i=i+1){
+            for(int j=0;j<n;j=j+1){
+                dp[i][0]=0;
+                dp[0][j]=0;
+            }
+        }
+
+        for(int i=1;i<=n;i=i+1){
+            for(int j=1;j<=n;j=j+1){
+                if(arr[i-1]==b[j-1]){
+                    dp[i][j]=dp[i-1][j-1]+1;
+                }
+                else{
+                    dp[i][j]=max(dp[i-1][j],dp[i][j-1]);
+                }
+            }
+        }
+
+        return dp[n][n];
+    }
+
+    public static void main(String args[]){
+        Scanner sc=new Scanner(System.in);
+        int testcases=sc.nextInt();
+        while(testcases-->0){
+            String str=sc.next();
+            int n=str.length();
+            char[] arr=str.toCharArray();
+            char[] b=new char[n];
+
+            for(int i=0;i<n;i=i+1){
+                b[i]=arr[n-i-1];
+            }
+
+            LongestPallindromicSubsequenc LPS=new LongestPallindromicSubsequenc();
+            int result=LPS.LCS(n, arr, b);
+            System.out.println(result);
+        }
+    }
+}
\ No newline at end of file