Find The Repeating And Missing Number Problem Statement

You are provided with an array nums which contains the first N positive integers. In this array, one integer appears twice, and one integer is missing. Your task is to identify the integer that repeats and the one that is missing.

Input:

The first line contains an integer 'T', the number of test cases. 
 Each test case consists of two lines: 
 - An integer 'N', the number of elements in the array. 
 - 'N' space-separated integers, the elements of the array.

Output:

For each test case, output the repeating and missing numbers as two space-separated integers.

Example:

Input:

nums = [1, 2, 3, 4, 4, 5]

Output:

4 6

Explanation:

In the given array, the number '4' appears twice and the number '6' is missing.

Constraints:

• 1 ≤ T ≤ 100
• 2 ≤ N ≤ 10⁴
• 1 ≤ nums[i] ≤ N

Time Limit: 1 sec