Create 0102-binary-tree-level-order-traversal.md #30
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oda
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Oct 30, 2025
| - 大体のコメントで、そうですよねー、という感覚を持った。 | ||
| - https://github.com/nanae772/leetcode-arai60/pull/26 | ||
| - こちらでも、`nodes_by_level.append([node.val for node in nodes])`でnodes_by_levelへのアクセスがまとまっていて読みやすいと感じた。 | ||
| - itertools.chainを初めて見ました。 |
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別に標準ライブラリーをすべて覚えているわけではないです。ただ、時々気が向いたときに読んでいると、なんかあったなあという感じになっていきます。
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この問題：https://leetcode.com/problems/binary-tree-level-order-traversal/
次の問題：https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/