Same Tree

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.

 

Subscribe to see which companies asked this question

Show Tags

 

/**
* 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 == NULL && q == NULL) {
return true;
} else if (p != NULL && q != NULL && p->val == q->val) {
return isSameTree(p->left,q->left) && isSameTree(p->right,q->right);
} else {
return false;
}
}
};

转载于:https://www.cnblogs.com/SpeakSoftlyLove/p/5210148.html