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๐Ÿš€ ๋ณตํ•ฉ ํŒจํ„ด Posts

๐Ÿš€ ๋ณตํ•ฉ ํŒจํ„ด
2447. Number of Subarrays With GCD Equal to K
์‹œ์ž‘ ์ธ๋ฑ์Šค๋ฅผ ๊ณ ์ •ํ•˜๊ณ  ์˜ค๋ฅธ์ชฝ์œผ๋กœ ํ™•์žฅํ•˜๋ฉฐ gcd๋ฅผ ๊ฐฑ์‹ ํ•ด k๊ฐ€ ๋˜๋ฉด ์นด์šดํŠธํ•˜๊ณ  k๋ณด๋‹ค ์ž‘์•„์ง€๋ฉด ์ค‘๋‹จํ•˜๋Š” O(n^2) sliding window ์ „๋žต ์ •๋ฆฌ
Oct 29, 2025
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3356. Zero Array Transformation II
Binary search์™€ Difference Array ํŒ๋ณ„ ํ•จ์ˆ˜๋ฅผ ๊ฒฐํ•ฉํ•ด ํ•„์š”ํ•œ ์ตœ์†Œ query ์ˆ˜๋ฅผ ์ฐพ๋Š” ๋ฐฉ๋ฒ•
Oct 17, 2025
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3350. Adjacent Increasing Subarrays Detection II
์ธ์ ‘ํ•œ ์ฆ๊ฐ€ ๋ถ€๋ถ„ ๋ฐฐ์—ด ๋‘ ๊ฐœ์˜ ์ตœ๋Œ€ ๊ธธ์ด๋ฅผ DP ์ „์ฒ˜๋ฆฌ์™€ ์ด์ง„ ํƒ์ƒ‰์œผ๋กœ ์ฐพ์•„๋‚ด๋Š” ์ „๋žต๊ณผ ๊ตฌํ˜„์„ ์ •๋ฆฌ
Oct 16, 2025
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3349. Adjacent Increasing Subarrays Detection I
์ „์ฒด ๋ฐฐ์—ด์—์„œ ๊ธธ์ด k์ธ ์„œ๋กœ ์ธ์ ‘ํ•œ ๋‘ ๊ฐœ์˜ ์—„๊ฒฉํžˆ ์ฆ๊ฐ€ํ•˜๋Š” ๋ถ€๋ถ„ ๋ฐฐ์—ด์ด ๋™์‹œ์— ์กด์žฌํ•˜๋Š”์ง€ ํŒ๋ณ„ํ•˜๋Š” ๋ฌธ์ œ
Oct 15, 2025