[sangyyypark] WEEK 01 solutions #1980

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sangyyypark wants to merge 7 commits intoDaleStudy:mainfrom

sangyyypark:main

Commits on Nov 9, 2025

add contains-duplicate
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Commits on Nov 10, 2025

Commits on Nov 11, 2025

add top n frequent elements
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Commits on Nov 12, 2025

add longest consecutive sequence
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Commits on Nov 14, 2025