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Apr 14, 2024
| ```java | ||
| // Time spend: 00:50 | ||
| class Solution { | ||
| public boolean hasPathSum(TreeNode root, int targetSum) { |
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これは OK です。
いわゆるスタックを使って書き直せますか?
スタックは ArrayDeque でしたっけ。Stack は、もう使わないんでしたっけ。
https://stackoverflow.com/questions/1386275/why-is-java-vector-and-stack-class-considered-obsolete-or-deprecated
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https://leetcode.com/problems/path-sum/description/