Diagonal Difference
import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
public class Solution
{
public static void main(String args[])
{
int p=diagonalDifference();
System.out.println(p);
}
public static int diagonalDifference()
{
Scanner sc=new Scanner(System.in);
int sum1=0,sum2=0;
int n=sc.nextInt();
int arr[][]=new int[n][n];
for(int r=0;r<n;r++)
{
for(int c=0;c<n;c++)
{
arr[r][c]=sc.nextInt();
}
}
for(int j=0;j<n;j++)
{
sum1=sum1+arr[j][j];
}
for(int i=0;i<n;i++)
{
for(int j=0;j<n;j++)
{
if((i+j)==(n-1))
{
sum2=sum2+arr[i][j];
}
}
}
int diff=0;
if (sum2>sum1)
diff=sum2-sum1;
else
diff=sum1-sum2;
return diff;
}
}
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