# I always return 1 in Compare to, but i do not find ans [closed] Code Answer

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```import java.util.*;
public class S {
static Scanner sc = new Scanner(System.in);
static Integer a[] = new Integer[3];

public static void main(String[] args) {
int t = sc.nextInt();
while (t-- > 0) {
int n=3;
for (int i = 0; i < n; i++) {
a[i] = sc.nextInt();
}
Arrays.sort(a,new Sort1());
}
}
}
class Sort1 implements Comparator<Integer>
{
public int compare(Integer a,Integer b)

{
for(int a1:S.a){
System.out.print(a1+" ");
}
System.out.println();
// return a-b;
return 1;
}
}
```

hi can solve my problem. how compare tor work in java? Input: 1 5 2 7 output 5 2 7 why out put is not 7 5 2? what i thin if we return 1 than. 1.5 2.5 2(becuse of one return)=>2 5 3.7 2 5=>7 5 2

So your understanding about `Comparator` is wrong.

From the name itself we can assume that it needs to compare something right? but in your code you are not comparing anything but you are printing the values in comparator which is wrong.

If you check the arguments of the comparator you can see two integers are passing to it. Those integers are actually your array elements. You need to compare those elemets.

```public int compare(Integer a,Integer b)
{
if(a < b){
return 1;
}else if( a == b){
return 0;
}
else {
return -1;

}
}
```

Like this and print your array in main. It will be sorted

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