Given a sorted array A of size N. The function remove_duplicate takes two arguments . The first argument is the sorted array A[ ] and the second argument is 'N' the size of the array and returns the size of the new converted array A[ ] with no duplicate element.

Input Format:
The first line of input contains T denoting the no of test cases . Then T test cases follow . The first line of each test case contains an Integer N and the next line contains N space separated values of the array A[ ] .

Output Format:
For each test case output will be the transformed array with no duplicates.

Your Task: Your task to complete the function remove_duplicate which removes the duplicate elements from the array .

Constraints:
1 <= T <= 100
1 <= N <= 10^{4}
1 <= A[ ] <= 10^{6}

Example: Input (To be used only for expected output) :
2
5
2 2 2 2 2
3
1 2 2 Output
2
1 2

Note:The Input/Ouput format and Example given are used for system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.