recursive adding

Question

considering interger list i want recursive function for the list adding all elements except the last element example a[12345] output a[105]

Vulpes · Answer

Try this (EDITED): using System; using System.Collections.Generic; class Program { static void Main() { var a = new List {1 2 3 4 5}; RecursiveAdd(a); // check it worked foreach(int i in a) Console.Write({0}  i); Console.ReadKey(); } static void RecursiveAdd(List a) { if(a == null || a.Count if(a.Count == 2) return; a[0] += a[a.Count - 2]; a.RemoveAt(a.Count - 2); RecursiveAdd(a); } } The output should be: 10 5