Esempio n. 1
0
        private static void Helper(LeetCode144TreeNode root)
        {
            if (root == null)
            {
                return;
            }
            ans.Add(root.val);

            Helper(root.left);
            Helper(root.right);
        }
Esempio n. 2
0
 public static IList <int> PreorderTraversal(LeetCode144TreeNode root)
 {
     Helper(root);
     return(ans);
 }
Esempio n. 3
0
 public LeetCode144TreeNode(int val = 0, LeetCode144TreeNode left = null, LeetCode144TreeNode right = null)
 {
     this.val   = val;
     this.left  = left;
     this.right = right;
 }