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[soobing] WEEK 05 Solutions#2510

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soobing wants to merge 4 commits intoDaleStudy:mainfrom
soobing:week5
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[soobing] WEEK 05 Solutions#2510
soobing wants to merge 4 commits intoDaleStudy:mainfrom
soobing:week5

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@soobing soobing commented Apr 5, 2026

๋‹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
  • ์„ค๋ช…: ์ด ์ฝ”๋“œ๋Š” ๋‘ ํฌ์ธํ„ฐ(left, right)๋ฅผ ์ด์šฉํ•ด ์ตœ์ ์˜ ๋งค์ˆ˜์™€ ๋งค๋„ ์‹œ์ ์„ ์ฐพ๋Š” ๋ฐฉ์‹์œผ๋กœ, ๋ฐฐ์—ด ๋‚ด์—์„œ ์กฐ๊ฑด์— ๋งž๋Š” ๊ฐ’์„ ์ฐพ๊ธฐ ์œ„ํ•ด ํฌ์ธํ„ฐ๋ฅผ ์ด๋™์‹œํ‚ค๋Š” ํŒจํ„ด์ž…๋‹ˆ๋‹ค.

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๐Ÿท๏ธ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํŒจํ„ด ๋ถ„์„

  • ํŒจํ„ด: String Manipulation
  • ์„ค๋ช…: ์ด ์ฝ”๋“œ๋Š” ๋ฌธ์ž์—ด์„ ํŠน์ • ํฌ๋งท์œผ๋กœ ์ธ์ฝ”๋”ฉํ•˜๊ณ  ๋””์ฝ”๋”ฉํ•˜๋Š” ๊ณผ์ •์œผ๋กœ, ๋ฌธ์ž์—ด ์กฐ์ž‘๊ณผ ํฌ๋งท ๋ณ€ํ™˜์— ์ดˆ์ ์„ ๋งž์ถ˜ ํŒจํ„ด์ž…๋‹ˆ๋‹ค. ๋ช…์‹œ์  ํŒจํ„ด ๋ชฉ๋ก์— ์—†์ง€๋งŒ ๋ฌธ์ž์—ด ์ฒ˜๋ฆฌ์— ํŠนํ™”๋œ ๋ฐฉ๋ฒ•์ž…๋‹ˆ๋‹ค.

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๐Ÿท๏ธ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํŒจํ„ด ๋ถ„์„

  • ํŒจํ„ด: Trie
  • ์„ค๋ช…: ์ด ์ฝ”๋“œ๋Š” ๋ฌธ์ž์—ด์˜ ์ ‘๋‘์‚ฌ ๊ฒ€์ƒ‰์„ ์œ„ํ•ด ํŠธ๋ฆฌ ๊ตฌ์กฐ๋ฅผ ํ™œ์šฉํ•˜๋Š” Trie ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค. ํšจ์œจ์ ์ธ ๋ฌธ์ž์—ด ๊ฒ€์ƒ‰๊ณผ ์‚ฝ์ž…์ด ๊ฐ€๋Šฅํ•˜๋„๋ก ์„ค๊ณ„๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

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