摘要: class TreeNode { int val = 0; TreeNode left = null; TreeNode right = null; public TreeNode(int val) { this.val = val; } } 前序遍历 递归版 private void getPre 阅读全文
posted @ 2021-10-20 18:11 FCmmmmmm 阅读(26) 评论(0) 推荐(0) 编辑