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[LeetCode]100 Same Tree

https://oj.leetcode.com/problems/same-tree/

http://blog.csdn.net/linhuanmars/article/details/22839819

/**
 * Definition for binary tree
 * public class TreeNode {
 *     int val;
 *     TreeNode left;
 *     TreeNode right;
 *     TreeNode(int x) { val = x; }
 * }
 */
public class Solution {
    public boolean isSameTree(TreeNode p, TreeNode q) {        
        if (p == null && q == null)
            return true;
        
        if ((p == null && q != null) || (p != null && q == null))
            return false;
            
        if (p.val != q.val)
            return false;
            
        return isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
    }
}


[LeetCode]100 Same Tree