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    ## Triangle ### ๋ฌธ์ œ ๊ธธ์ด N์˜ ๋ฐฐ์—ด A๊ฐ€ ์ฃผ์–ด์ง„๋‹ค. (P, Q, R)์€ ์‚ผ๊ฐํ˜•์ด ๋  ์ˆ˜ ์žˆ๋Š”๋ฐ, ์ด๋Š” - 0 โ‰ค P < Q < R < N - A[P] + A[Q] > A[R] - A[Q] + A[R] > A[P] - A[R] + A[P] > A[Q] ๋ผ๋Š” ์กฐ๊ฑด์„ ๋งŒ์กฑ ํ•˜๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค. ``` A[0] = 10 A[1] ...
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    ## 1-1 Binary Gap ### ๋ฌธ์ œ ์ˆซ์ž N์„ ์ด์ง„์ˆ˜๋กœ ๋ฐ”๊ฟจ์„๋•Œ, 1๊ณผ 1์‚ฌ์ด์— ์žˆ๋Š” 0์˜ ๊ฐœ์ˆ˜๊ฐ€ ๊ฐ€์žฅ ๋งŽ์ด ์—ฐ์†ํ•ด ์žˆ๋Š” 0์˜ ๊ฐœ์ˆ˜๋ฅผ ๊ตฌํ•˜๋ผ. ``` 9๋Š” ์ด์ง„์ˆ˜๋กœ ๋ฐ”๊ฟ€ ๊ฒฝ์šฐ 1001, ์ด๊ฒฝ์šฐ 0์˜ ์ตœ๋Œ€ ๊ฐœ์ˆ˜๋Š” 2. 529๋Š” ์ด์ง„์ˆ˜๋กœ ๋ฐ”๊ฟ€ ๊ฒฝ์šฐ 1000010001, ์ด๊ฒฝ์šฐ 0์˜ ์ตœ๋Œ€ ๊ฐœ์ˆ˜๋Š” 3. 20์€ ์ด์ง„์ˆ˜๋กœ ๋ฐ”๊ฟ€ ๊ฒฝ์šฐ 10100, ์ด ๊ฒฝ์šฐ...
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    ## 2-1 Cyclic Rotation ### ๋ฌธ์ œ ๋ฐฐ์—ด A๊ฐ€ ์ฃผ์–ด์ง€๊ณ  ์ด๋ฅผ K๋ฒˆ ๊ฐ ๋ฐฐ์—ด์˜ ์š”์†Œ๋ฅผ ์˜ค๋ฅธ์ชฝ์œผ๋กœ ์ด๋™์‹œ์ผฐ์„ ๋•Œ, ๊ทธ ๊ฒฐ๊ณผ๋ฅผ ๋ฆฌํ„ดํ•˜์‹œ์˜ค. ``` A = [3, 8, 9, 7, 6] K = 3 [3, 8, 9, 7, 6] -> [6, 3, 8, 9, 7] [6, 3, 8, 9, 7] -> [7, 6, 3, 8, 9] [7, 6, 3, 8...
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    ## 2-2 Odd Occurrences in array ### ๋ฌธ์ œ ์ˆซ์ž๋กœ ์ด๋ค„์ง„ ๋ฐฐ์—ด์—์„œ ํ™€์ˆ˜ ๋ฒˆ ๋“ฑ์žฅํ•˜๋Š” ์ˆซ์ž๋ฅผ ์ฐพ์•„์„œ ๋ฆฌํ„ดํ•ด๋ผ. ``` A[0] = 9 A[1] = 3 A[2] = 9 A[3] = 3 A[4] = 9 A[5] = 7 A[6] = 9 7์€ ํ•œ๋ฒˆ๋งŒ ๋“ฑ์žฅํ•˜๋ฏ€๋กœ 7์„ ๋ฆฌํ„ดํ•ด์•ผ ํ•œ๋‹ค. ``` ### ํ’€์ด ```javascri...
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    ## 3-1 Frog Jump ### ๋ฌธ์ œ ๊ฐœ๊ตฌ๋ฆฌ๊ฐ€ X์—์„œ Y๊นŒ์ง€ ๋›ฐ์–ด์•ผ ํ•˜๊ณ , ํ•œ๋ฒˆ์— D ๋งŒํผ ์ ํ”„ ํ•  ์ˆ˜ ์žˆ์„ ๋•Œ, ๋ช‡๋ฒˆ์„ ๋›ฐ์–ด์•ผ ํ•˜๋Š”๊ฐ€? ### ํ’€์ด ```javascript function solution(X, Y, D) { return Math.ceil((Y - X) / D) } ``` https://app.codility.com/...