一、二叉树的最大深度
int maxDepth(TreeNode *root)
{
if(root == NULL)
return 0;
int left = maxDepth(root->left)
int right = maxDepth(root->right)
return left>right ? (left+1 ): (right+1); //返回两者当中较大数int maxDepth(TreeNode *root)
{