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[hoonjichoi1] WEEK 03 solutions#2716

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@Hoonjichoi1

@Hoonjichoi1 Hoonjichoi1 commented Jul 6, 2026

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๋‹ต์•ˆ ์ œ์ถœ ๋ฌธ์ œ

์ž‘์„ฑ์ž ์ฒดํฌ ๋ฆฌ์ŠคํŠธ

  • Projects์˜ ์˜ค๋ฅธ์ชฝ ๋ฒ„ํŠผ(โ–ผ)์„ ๋ˆŒ๋Ÿฌ ํ™•์žฅํ•œ ๋’ค, Week๋ฅผ ํ˜„์žฌ ์ฃผ์ฐจ๋กœ ์„ค์ •ํ•ด์ฃผ์„ธ์š”.
  • ๋ฌธ์ œ๋ฅผ ๋ชจ๋‘ ํ‘ธ์‹œ๋ฉด ํ”„๋กœ์ ํŠธ์—์„œ Status๋ฅผ In Review๋กœ ์„ค์ •ํ•ด์ฃผ์„ธ์š”.
  • ์ฝ”๋“œ ๊ฒ€ํ† ์ž 1๋ถ„ ์ด์ƒ์œผ๋กœ๋ถ€ํ„ฐ ์Šน์ธ์„ ๋ฐ›์œผ์…จ๋‹ค๋ฉด PR์„ ๋ณ‘ํ•ฉํ•ด์ฃผ์„ธ์š”.

๊ฒ€ํ† ์ž ์ฒดํฌ ๋ฆฌ์ŠคํŠธ

Important

๋ณธ์ธ ๋‹ต์•ˆ ์ œ์ถœ ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ๋‹ค๋ฅธ ๋ถ„ PR ํ•˜๋‚˜ ์ด์ƒ์„ ๋ฐ˜๋“œ์‹œ ๊ฒ€ํ† ๋ฅผ ํ•ด์ฃผ์…”์•ผ ํ•ฉ๋‹ˆ๋‹ค!

  • ๋ฐ”๋กœ ์ด์ „์— ์˜ฌ๋ผ์˜จ PR์— ๋ณธ์ธ์„ ์ฝ”๋“œ ๋ฆฌ๋ทฐ์–ด๋กœ ์ถ”๊ฐ€ํ•ด์ฃผ์„ธ์š”.
  • ๋ณธ์ธ์ด ๊ฒ€ํ† ํ•ด์•ผํ•˜๋Š” PR์˜ ๋‹ต์•ˆ ์ฝ”๋“œ์— ํ”ผ๋“œ๋ฐฑ์„ ์ฃผ์„ธ์š”.
  • ํ† ์š”์ผ ์ „๊นŒ์ง€ PR์„ ๋ณ‘ํ•ฉํ•  ์ˆ˜ ์žˆ๋„๋ก ์Šน์ธํ•ด์ฃผ์„ธ์š”.

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๐Ÿท๏ธ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํŒจํ„ด ๋ถ„์„

  • ํŒจํ„ด: Two Pointers, Greedy
  • ์„ค๋ช…: ๋ฌธ์ž์—ด์„ ์•ž๋’ค์—์„œ ๋™์‹œ์— ๋น„๊ตํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ๋Œ€์นญ ์—ฌ๋ถ€๋ฅผ ํ™•์ธํ•˜๋ฏ€๋กœ Two Pointers ํŒจํ„ด์— ์†ํ•˜๋ฉฐ, ์ตœ์ ํ™” ์—†์ด ์ขŒ์šฐ ํฌ์ธํ„ฐ๋กœ ๋น„๊ตํ•˜๋Š” ๊ฐ„๋‹จํ•œ ํƒ์ƒ‰์œผ๋กœ ๊ตฌํ˜„๋ฉ๋‹ˆ๋‹ค. ์ด ํ’€์ด๋Š” ํŠน์ •ํ•œ ์ตœ์ ํ™” ๊ธฐ๋ฒ•์ด๋‚˜ ๋‹ค๋ฅธ ํŒจํ„ด์€ ์‚ฌ์šฉํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค.

๐Ÿ“Š ์‹œ๊ฐ„/๊ณต๊ฐ„ ๋ณต์žก๋„ ๋ถ„์„

๋ณต์žก๋„
Time O(n)
Space O(n)

ํ”ผ๋“œ๋ฐฑ: ์ž…๋ ฅ ๋ฌธ์ž์—ด์„ ํ•œ ๋ฒˆ ๊ฑฐ์ณ ์ •๊ทœํ™”ํ•˜๊ณ , ์ •๊ทœํ™”๋œ ๋ฌธ์ž์—ด์˜ ์–‘ ๋์—์„œ ํ•œ ๋ฐ”ํ€ด์”ฉ ๋น„๊ตํ•œ๋‹ค. ์ถ”๊ฐ€์ ์ธ ์ž๋ฃŒ๊ตฌ์กฐ ์—†์ด ๋ฌธ์ž์—ด ๊ธธ์ด์— ๋น„๋ก€ํ•˜๋Š” ๊ณต๊ฐ„์„ ์‚ฌ์šฉํ•œ๋‹ค.

๊ฐœ์„  ์ œ์•ˆ: ํ˜„์žฌ ๊ตฌํ˜„์ด ์ ์ ˆํ•ด ๋ณด์ž…๋‹ˆ๋‹ค.

๐Ÿ’ก ํ’€์ด์— ์‹œ๊ฐ„/๊ณต๊ฐ„ ๋ณต์žก๋„๋ฅผ ์ฃผ์„์œผ๋กœ ๋‚จ๊ฒจ๋ณด์„ธ์š”!

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