public class Solution {
	public int[] TwoSum(int[] nums, int target) {
		for (var i = 0; i < nums.Length; i++) {
			for (var j = 0; j < nums.Length; j++) {
				if (nums[i] + nums[j] == target)
					return new[]{i, j};
			}
		}

		return null;
	}
}