Same Tree
问题描述:
Given two binary trees, write a function to check if they are equal or not.
Two binary trees are considered equal if they are structurally identical and the nodes have the same value.
测试代码:
/**
* Definition for a binary tree node.
* struct TreeNode {
* int val;
* TreeNode *left;
* TreeNode *right;
* TreeNode(int x) : val(x), left(NULL), right(NULL) {}
* };
*/
class Solution {
public:
bool isSameTree(TreeNode* p, TreeNode* q) {
if(!p||!q)
{
if(p==q)
return true;
else{
return false;
}
}
if(p->val!=q->val)
return false;
if(isSameTree(p->left,q->left)&&isSameTree(p->right,q->right))
return true;
else{
return false;
}
}
};