本文研究的总结,欢迎转载,但请注明出处:http://blog.csdn.net/pistolove/article/details/41964475

Maximum Depth of Binary Tree

Given a binary tree, find its maximum depth.

The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.

思路:

(1)题意为找到二叉树最大深度:即为从树根到叶子节点的最大路径。

(2)该题思路和遍历二叉树和寻找二叉树最短深度类似,能够參照二叉树按层次遍历实现http://blog.csdn.net/pistolove/article/details/41929059

(3)为了求得二叉树最大深度。本文也是考虑运用二叉树按层次遍历的思想,二叉树遍历层次的次数即为二叉树的最大深度,这里非常easy理解。

(4)基本的解题思路还是二叉树按层次遍历。本文仅仅只是顺手把其拿过来使用罢了。希望对你有所帮助。

谢谢。

算法代码实现例如以下所看到的:

//最大深度
public static int getDeep(TreeNode root){
if(root==null) return 0;
int level = 0;
LinkedList<TreeNode> list = new LinkedList<TreeNode>();
list.add(root);
int first = 0;
int last = 1;
while(first<list.size()){
last = list.size();
while(first<last){
if(list.get(first).left!=null){
list.add(list.get(first).left);
}
if(list.get(first).right!=null){
list.add(list.get(first).right);
}
first++;
}
level++;
}
return level;
}

版权声明:本文博主原创文章,博客,未经同意不得转载。

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