Course Schedule#106
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tom4649 wants to merge 2 commits into
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nodchip
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May 22, 2026
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| ## step1 | ||
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| DAG判定だと思う。トポロジカルソート。 |
| return True | ||
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| for root in range(numCourses): | ||
| if not no_cycle(root, set()): |
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二重否定は読み手に取ってやや認知負荷が高くなると思います。 inner function を has_cycle() とし、
if has_cycle(root, set()):としたほうが読み手にとって優しいと思います。
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二重否定が認知負荷を上げるというのは覚えておきます。step2_recursion.pyを書き換えました。
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https://leetcode.com/problems/course-schedule/description/?envType=problem-list-v2&envId=rab78cw1