Challenge: Find Two Numbers That Add Up to n

Problem statement

In this problem, you have to implement the FindSum(int[] arr, int n) method, which will take an array arr and number n as inputs and return two numbers from the list that add up to n.

Input

An array and a number n.

Output

An array with two integers a and b that add up to n.

Sample input

arr = {1, 21, 3, 14, 5, 60, 7, 6};
n = 81;

Sample output

result = {21, 60};

For example, in this illustration, we are given 81 as the number n, and when we traverse the whole array, we find that 21 and 60 are the integers that add up to 81.