100. Same Tree, 100 sametree

Source: Internet
Author: User

100. Same Tree, 100 sametree

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.

The Code is as follows:

1/** 2 * Definition for a binary tree node. 3 * public class TreeNode {4 * int val; 5 * TreeNode left; 6 * TreeNode right; 7 * TreeNode (int x) {val = x ;} 8 *} 9 */10 public class Solution {11 public boolean isSameTree (TreeNode p, TreeNode q) {12 if (p = null & q = null) 13 return true; 14 if (p! = Null & q! = Null) 15 {16 if (p. val = q. val & isSameTree (p. left, q. left) & isSameTree (p. right, q. right) 17 return true; 18} 19 return false; 20} 21}

 

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