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GMEDIAN.java
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import java.util.Arrays;
import java.util.Scanner;
import java.util.HashMap;
class GMEDIAN {
public static int solve(int[]a, int n){
HashMap<Integer, Integer> m = new HashMap<Integer, Integer>();
for(int i=0; i<nums.length; i++){
if(m.get(target-nums[i]) != null){
int[]ans=new int[2];
ans[0]=m.get(target-nums[i]);
ans[1]=i;
return ans;
}
m.put(nums[i], i);
}
return null;
}
public static void main(String[] args) {
Scanner in= new Scanner(System.in);
int t=in.nextInt();
for(int i=0; i<t; i++){
int n=in.nextInt();
int a[]=new int[n];
for(int j=0; j<n; j++){
a[j]=in.nextInt();
}
Arrays.sort(a);
System.out.println(solve(a, n));
}
}
}