/** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */ class Solution { public boolean isSameTree(TreeNode p, TreeNode q) { if(p==null&&q==null) return true; if(p!=null&&q!=null&&p.val==q.val) { return isSameTree(p.left, q.left)&&isSameTree(p.right, q.right); } return false; } }解题思路:树经常用到递归的思想
LeetCode100——sameTree
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