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"踏上LeetCode解題之路,順手紀錄一下PHP練功的過程囉。這是第九篇~~" |
思考過程
待補上
結果✅
/** * Definition for a binary tree node. * class TreeNode { * public $val = null; * public $left = null; * public $right = null; * function __construct($val = 0, $left = null, $right = null) { * $this->val = $val; * $this->left = $left; * $this->right = $right; * } * } */ class Solution { /** * @param TreeNode $p * @param TreeNode $q * @return Boolean */ function isSameTree($p, $q) { if($p->val === null && $q->val === null) { return true; } if($p->val === null || $q->val === null) { return false; } if ($p->val === $q->val) { return ($this->isSameTree($p->left, $q->left) && $this->isSameTree($p->right, $q->right)); } return false; } }