public static LeetCode226TreeNode InvertTree(LeetCode226TreeNode root) { if (root == null) { return(null); } InvertTree(root.left); InvertTree(root.right); var temp = root.right; root.right = root.left; root.left = temp; return(root); }
public LeetCode226TreeNode(int val = 0, LeetCode226TreeNode left = null, LeetCode226TreeNode right = null) { this.val = val; this.left = left; this.right = right; }