The solution I did is working for the second test case with array size 3 but array size greater than 3 is showing sigtstp error.
the question is
please someone help here is my solution
import java.util.*;
import java.lang.*;
import java.io.*;
class Codechef {
public static void main(String[] args) throws java.lang.Exception {
Scanner sc = new Scanner(System.in);
int t = sc.nextInt();
while (t--> 0) {
int n = sc.nextInt();
int a[] = new int[n];
for(int k=0;k<a.length;k++)
{
a[k]=sc.nextInt();
}
int r, temp, sum = 0, count = 0;
for (int i = 0; i < n; i++) {
for (int j = i; j < n; j++) {
int xornum = a[i] ^ a[j];
temp = xornum;
while (xornum > 0) {
r = n % 10;
sum = (sum * 10) + r;
n = n / 10;
}
if (temp == sum) {
count++;
}
}
}
System.out.println(count);
}
}
}