Recursive Function

Dave Green

Write a recursive function that returns a string and that takes 1 string parameter. Each invocation of the function should concatenate the string parameter to itself. So, if the string "duck" was passed in, it should return the string "duckduck". The recursion should stop when the length of the string exceeds 100.

1 Reply

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Vulpes12y ago

Try:

using System;

class Program {
  static void Main() {
    string s = "duck";
    s = Concatenate(s);
    Console.WriteLine(s);
    Console.ReadKey();
  }

  static string Concatenate(string s) {
    while (s.Length <= 100) {
      s = Concatenate(s + s);
    }
    return s;
  }
}