Original code:
using System; using System.Collections.Generic; class TwoSum { public static Tuple
FindTwoSum(IList
list, int sum) { throw new NotImplementedException("Waiting to be implemented."); } public static void Main(string[] args) { Tuple
indices = FindTwoSum(new List
() { 3, 1, 5, 7, 5, 9 }, 10); if(indices != null) { Console.WriteLine(indices.Item1 + " " + indices.Item2); } } }