Rod Cutting .txt

import java.util.*;
import java.lang.*;
import java.io.*;
class GFG
 {
	 public static void main (String[] args) throws IOException
	 {
	 BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
	 StringBuffer sb=new StringBuffer();
	 int T=Integer.parseInt(br.readLine());
	 while(T-->0)
	 {
	     int n=Integer.parseInt(br.readLine());
	     String[] s=br.readLine().split("\\s");
	     int[] arr=new int[n];
	     for(int i=0;i<n;i++)
	     {
	         arr[i]=Integer.parseInt(s[i]);
	     }
	     int[][] dp=new int[n+1][n+1];
	     for(int[] x:dp)
	     {
	     Arrays.fill(x,-1);
	     }
	     sb.append(rodcut(arr,0,n,dp)+"\n");
	 }
	 System.out.print(sb);
	 }
	 public static int rodcut(int[] arr,int i,int rodlen,int[][] dp)
	 {
	     if(i==arr.length)
	     {
	         return 0;
	     }
	     if(rodlen==0)
	     {
	         
	         return 0;
	     }
	     if(dp[i][rodlen]!=-1)
	     {
	         return dp[i][rodlen];
	     }
	     int smalloutput1=0,smalloutput2=0;
	     if(rodlen-i-1>=0)
	     {
	         smalloutput1=arr[i]+rodcut(arr,i,rodlen-i-1,dp);
	     }
	     smalloutput2=rodcut(arr,i+1,rodlen,dp);
	     return dp[i][rodlen]=Math.max(smalloutput1,smalloutput2);
	 }
}