Driver code
public static void Main ( String [ ] args ) { MinimumTreeHeight tree = new MinimumTreeHeight ( ) ; tree . root = new Node ( 1 ) ; tree . root . left = new Node ( 2 ) ; tree . root . right = new Node ( 3 ) ; tree . root . left . left = new Node ( 4 ) ; tree . root . left . right = new Node ( 5 ) ; Console . WriteLine ( " The ▁ minimum ▁ depth ▁ of ▁ " + " binary ▁ tree ▁ is ▁ : ▁ " + tree . minimumDepth ( ) ) ; } }