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[rivkode] WEEK 13 solutions#2314

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TonyKim9401 merged 1 commit intoDaleStudy:mainDaleStudy/leetcode-study:mainfrom
rivkode:mainrivkode/leetcode-study:mainCopy head branch name to clipboard
Feb 7, 2026
Merged

[rivkode] WEEK 13 solutions#2314
TonyKim9401 merged 1 commit intoDaleStudy:mainDaleStudy/leetcode-study:mainfrom
rivkode:mainrivkode/leetcode-study:mainCopy head branch name to clipboard

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@rivkode rivkode commented Feb 4, 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”.

@TonyKim9401
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@DaleStudy ๋ฆฌ๋ทฐํ•ด์ค˜

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dalestudy bot commented Feb 7, 2026

์šฐ์„ , ๊น”๋”ํ•œ ์ฝ”๋ฉ˜ํŠธ์™€ ํ•จ๊ป˜ ๋ฌธ์ œ ํ•ด๊ฒฐ ๊ณผ์ •์„ ์ž˜ ์ •๋ฆฌํ•˜์…จ๋„ค์š”! ์ด์ง„ ํƒ์ƒ‰ ํŠธ๋ฆฌ ํŠน์„ฑ์„ ํ™œ์šฉํ•œ ์žฌ๊ท€ ์ ‘๊ทผ๋ฒ•์€ ๋งค์šฐ ์ ํ•ฉํ•˜๋ฉฐ, ์ดํ•ด์™€ ๊ตฌํ˜„ ๋ชจ๋‘ ์ž˜ ๋˜์–ด ์žˆ์Šต๋‹ˆ๋‹ค.

๋ช‡ ๊ฐ€์ง€ ํ”ผ๋“œ๋ฐฑ ๋“œ๋ฆฌ์ž๋ฉด:

  1. ์‹œ๊ฐ„/๊ณต๊ฐ„ ๋ณต์žก๋„ ๋ถ„์„์ด ์ฝ”๋“œ์— ํฌํ•จ๋˜์ง€ ์•Š์•˜์–ด์š”. ์ด ๋ฌธ์ œ๋Š” ์ด์ง„ ํƒ์ƒ‰ ํŠธ๋ฆฌ์˜ ํŠน์„ฑ์„ ์ด์šฉํ•œ ์žฌ๊ท€๋กœ ํ•ด๊ฒฐํ•˜๋ฉฐ, TC: O(h), SC: O(h) (h๋Š” ํŠธ๋ฆฌ์˜ ๋†’์ด)๋กœ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ด๋ฅผ ๋ช…์‹œํ•˜๋ฉด ๋” ์™„์„ฑ๋„ ๋†’์€ ๋ฆฌ๋ทฐ๊ฐ€ ๋  ๊ฒƒ์ž…๋‹ˆ๋‹ค.

  2. ์•Œ๊ณ ๋ฆฌ์ฆ˜์˜ ํšจ์œจ์„ฑ์€ ์•„์ฃผ ์ ์ ˆํ•˜๋ฉฐ, ๋” ๋‚˜์€ ์ ‘๊ทผ๋ฒ•์€ ์—†์Šต๋‹ˆ๋‹ค. ํ•˜์ง€๋งŒ, ๋ฐ˜๋ณต์  ๋ฐฉ๋ฒ•์œผ๋กœ ๊ตฌํ˜„ํ•  ์ˆ˜๋„ ์žˆ๋Š”๋ฐ, ์ด๋Š” ๊ฐ€๋…์„ฑ์„ ๋†’์ด๊ณ  ์žฌ๊ท€ ํ˜ธ์ถœ ์Šคํƒ์„ ์ค„์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

  3. ์ฝ”๋“œ ์Šคํƒ€์ผ๊ณผ ๊ฐ€๋…์„ฑ์€ ์ข‹์•„์š”. ์กฐ๊ฑด๋ฌธ์ด ๋ช…ํ™•ํ•˜๋ฉฐ, ์ฃผ์„๋„ ์ดํ•ด๋ฅผ ๋•์Šต๋‹ˆ๋‹ค. ๋‹ค๋งŒ, else๋Š” ์ƒ๋žต ๊ฐ€๋Šฅํ•˜๋‹ˆ ์ฐธ๊ณ ํ•˜์„ธ์š”.

์ „๋ฐ˜์ ์œผ๋กœ ๋…ผ๋ฆฌ๋„ ํƒ„ํƒ„ํ•˜๊ณ , ํŠธ๋ฆฌ์˜ ํŠน์„ฑ์„ ์ž˜ ํ™œ์šฉํ•˜์…จ์Šต๋‹ˆ๋‹ค. ์•ž์œผ๋กœ๋Š” ๋ณต์žกํ•œ ๋ฌธ์ œ์— ๋Œ€ํ•œ ์‹œ๊ฐ„/๊ณต๊ฐ„ ๋ณต์žก๋„ ๋ถ„์„๋„ ํ•จ๊ป˜ ์—ฐ์Šตํ•˜๋ฉด ๋”์šฑ ์™„์„ฑ๋„ ๋†’์€ ๋‹ต์•ˆ์ด ๋  ๊ฒƒ ๊ฐ™์Šต๋‹ˆ๋‹ค. ๊ณ„์†ํ•ด์„œ ์ข‹์€ ์—ฐ์Šต ๊ธฐ๋Œ€ํ•ฉ๋‹ˆ๋‹ค!

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13์ฃผ์ฐจ ๋ฌธ์ œ ํ’€์ด ๊ณ ์ƒํ•˜์…จ์Šต๋‹ˆ๋‹ค.
์žฌ๊ท€ ๋ฐฉ์‹์œผ๋กœ ์ด์ง„ ํŠธ๋ฆฌ ์ˆœํšŒ ๋ฌธ์ œ ์ž˜ ํ’€์–ด๋‚ด์ฃผ์…จ๋„ค์š”!
์ด์ œ 2์ฃผ๋งŒ ๋” ์ง„ํ–‰ํ•˜์‹œ๋ฉด ์กธ์—…์ด์‹œ๋„ค์š”. ์Šคํ„ฐ๋”” ํ›„๊ธฐ ์–ธ์ œ๋“ ์ง€ ํŽผํ•˜์‹ค๋•Œ ๋‚จ๊ฒจ์ฃผ์‹œ๊ณ  14์ฃผ์ฐจ๋„ ํŒŒ์ดํŒ…์ž…๋‹ˆ๋‹ค!

@TonyKim9401 TonyKim9401 merged commit e0649f0 into DaleStudy:main Feb 7, 2026
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