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Xorpalindrome.java

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//code for xorpalindrome in Java

import java.util.*;

import java.lang.*;

import java.io.*;

class Xorpalindrome

{

public static void main (String[] args) throws java.lang.Exception

{

// your code goes here

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(System.out));

int t=Integer.parseInt(br.readLine());

StringBuffer sb=new StringBuffer();

while(t-->0)

{

int n=Integer.parseInt(br.readLine());

String s=br.readLine();

int count1=0,count2=0;

for(int i=0;i<s.length();i++)

{

if(s.charAt(i)=='1')

count1++;

else

count2++;

}

boolean flag=false;

if(n%2==0)

{

if(count1==count2||count1%2==0&&count2%2==0)

flag=true;

}

else

{

flag=true;

}

if(flag)

System.out.println("YES");

else

System.out.println("NO");

}