JZ-038-The depth of the binary tree

Depth of binary tree

Title description

Enter a binary tree and find the depth of the tree. The nodes (including roots and leaf nodes) passing through from the root node to the leaf node in turn form a path of the tree, and the length of the longest path is the depth of the tree.

topic link : the depth of the binary tree

Code

/**
 * 标题：二叉树的深度
 * 题目描述
 * 输入一棵二叉树，求该树的深度。从根结点到叶结点依次经过的结点（含根、叶结点）形成树的一条路径，最长路径的长度为树的深度。
 * 题目链接：
 * https://www.nowcoder.com/practice/435fb86331474282a3499955f0a41e8b?tpId=13&&tqId=11191&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking
 */
public class Jz38 {

    /**
     * 递归
     *
     * @param root
     * @return
     */
    public int treeDepth(TreeNode root) {
        return root == null ? 0 : 1 + Math.max(treeDepth(root.left), treeDepth((root.right)));
    }

    public static void main(String[] args) {

    }
}

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