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package class06;
// 测试链接：https://leetcode.com/problems/same-tree
public class Code02_SameTree {
public static class TreeNode {
public int val;
public TreeNode left;
public TreeNode right;
}
public static boolean isSameTree(TreeNode p, TreeNode q) {
if (p == null ^ q == null) {
return false;
if (p == null && q == null) {
return true;
// 都不为空
return p.val == q.val && isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
