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[reeseo3o] WEEK 11 Solutions#2604

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reeseo3o merged 4 commits into
DaleStudy:mainfrom
reeseo3o:main
May 16, 2026
Merged

[reeseo3o] WEEK 11 Solutions#2604
reeseo3o merged 4 commits into
DaleStudy:mainfrom
reeseo3o:main

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@reeseo3o
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์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”.

@dalestudy
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dalestudy Bot commented May 16, 2026

๐Ÿ“Š reeseo3o ๋‹˜์˜ ํ•™์Šต ํ˜„ํ™ฉ

์ด๋ฒˆ ์ฃผ ์ œ์ถœ ๋ฌธ์ œ

๋ฌธ์ œ ๋‚œ์ด๋„ ์œ ํ˜• ๋ถ„์„
missing-number Easy โœ… ์˜๋„ํ•œ ์œ ํ˜•
reorder-list Medium โœ… ์˜๋„ํ•œ ์œ ํ˜•

๋ˆ„์  ํ•™์Šต ์š”์•ฝ

  • ํ’€์ดํ•œ ๋ฌธ์ œ: 21 / 75๊ฐœ
  • ์ด๋ฒˆ ์ฃผ ์œ ํ˜• ์ผ์น˜์œจ: 100% (2๋ฌธ์ œ ์ค‘ 2๋ฌธ์ œ ์ผ์น˜)

๋ฌธ์ œ ํ’€์ด ํ˜„ํ™ฉ

์นดํ…Œ๊ณ ๋ฆฌ ์ง„ํ–‰๋„ ์™„๋ฃŒ
Array โ– โ– โ– โ– โ– โ–กโ–ก 7 / 10 (Easy 3, Medium 4)
Linked List โ– โ– โ– โ– โ–กโ–กโ–ก 3 / 6 (Easy 3)
Binary โ– โ– โ– โ–กโ–กโ–กโ–ก 2 / 5 (Easy 2)
String โ– โ– โ– โ–กโ–กโ–กโ–ก 4 / 10 (Medium 1, Easy 3)
Heap โ– โ– โ–กโ–กโ–กโ–กโ–ก 1 / 3 (Medium 1)
Dynamic Programming โ– โ–กโ–กโ–กโ–กโ–กโ–ก 2 / 11 (Easy 1, Medium 1)
Graph โ– โ–กโ–กโ–กโ–กโ–กโ–ก 1 / 8 (Medium 1)
Tree โ– โ–กโ–กโ–กโ–กโ–กโ–ก 1 / 14 (Easy 1)
Interval โ–กโ–กโ–กโ–กโ–กโ–กโ–ก 0 / 5 โ† ์•„์ง ์‹œ์ž‘ ์•ˆ ํ•จ
Matrix โ–กโ–กโ–กโ–กโ–กโ–กโ–ก 0 / 4 โ† ์•„์ง ์‹œ์ž‘ ์•ˆ ํ•จ

๐Ÿค– ์ด ๋Œ“๊ธ€์€ GitHub App์„ ํ†ตํ•ด ์ž๋™์œผ๋กœ ์ž‘์„ฑ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

๐Ÿ”ข API ์‚ฌ์šฉ๋Ÿ‰ (gpt-4.1-nano)
์š”์ฒญ ์ž…๋ ฅ ํ† ํฐ ์ถœ๋ ฅ ํ† ํฐ ํ•ฉ๊ณ„ ๋น„์šฉ
1 800 68 868 $0.000107
2 794 67 861 $0.000106
ํ•ฉ๊ณ„ 1,594 135 1,729 $0.000213

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๋„ˆ๋ฌด ์ž˜ ํ‘ธ์…”์„œ ๋‹ต์•ˆ์— ๋Œ€ํ•œ ํ”ผ๋“œ๋ฐฑ์€ ๋”ฑํžˆ ์—†์Šต๋‹ˆ๋‹ค. ๋‹ค๋งŒ ์ฝ”๋“œ ํฌ๋ฉงํŒ…์ด ์ผ๊ด€์ ์ด์ง€ ์•Š์•„์„œ ์ชผ๋” ์•„์‰ฝ๋„ค์š”. Prettier ๊ฐ™์€ ๋„๊ตฌ๋ฅผ ์จ๋ณด์‹œ๋ฉด ์ข‹์„ ๊ฒƒ ๊ฐ™์Šต๋‹ˆ๋‹ค.

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๐Ÿท๏ธ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํŒจํ„ด ๋ถ„์„

  • ํŒจํ„ด: Math
  • ์„ค๋ช…: ์ด ์ฝ”๋“œ๋Š” ๊ฐ€์šฐ์Šค ๊ณต์‹์„ ์ด์šฉํ•˜์—ฌ ์—ฐ์†๋œ ์ˆ˜์˜ ํ•ฉ์„ ๊ณ„์‚ฐํ•˜๊ณ , ์ฃผ์–ด์ง„ ๋ฐฐ์—ด์˜ ํ•ฉ๊ณผ ๋น„๊ตํ•˜์—ฌ ๋น ๋ฅด๊ฒŒ ๋ˆ„๋ฝ๋œ ์ˆซ์ž๋ฅผ ์ฐพ๋Š”๋‹ค. ์ˆ˜ํ•™์  ๊ณต์‹ ํ™œ์šฉ์ด ํ•ต์‹ฌ์ด๋‹ค.

๐Ÿ“Š ์‹œ๊ฐ„/๊ณต๊ฐ„ ๋ณต์žก๋„ ๋ถ„์„

๋ณต์žก๋„
Time O(n)
Space O(1)

ํ”ผ๋“œ๋ฐฑ: ๋ฐฐ์—ด์˜ ๊ธธ์ด์™€ ํ•ฉ์„ ๊ณ„์‚ฐํ•˜๋Š” ๊ฐ„๋‹จํ•œ ๋ฐฉ๋ฒ•์œผ๋กœ ์‹œ๊ฐ„ ๋ณต์žก๋„๋Š” ์„ ํ˜•, ๊ณต๊ฐ„์€ ์ƒ์ˆ˜์ž…๋‹ˆ๋‹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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๐Ÿท๏ธ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํŒจํ„ด ๋ถ„์„

  • ํŒจํ„ด: Fast & Slow Pointers, Reverse Linked List, Merge Lists
  • ์„ค๋ช…: ์ด ์ฝ”๋“œ๋Š” ๋น ๋ฅธ-๋А๋ฆฐ ํฌ์ธํ„ฐ๋กœ ๋ฆฌ์ŠคํŠธ์˜ ์ค‘๊ฐ„์„ ์ฐพ๊ณ , ๋’ค๋ฅผ ๋’ค์ง‘์€ ํ›„ ๋‘ ๋ฆฌ์ŠคํŠธ๋ฅผ ๊ต์ฐจ ๋ณ‘ํ•ฉํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•ฉ๋‹ˆ๋‹ค. ์ฃผ๋กœ ์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ์˜ ํŠน์ • ํŒจํ„ด์„ ํ™œ์šฉํ•˜๋Š” ์•Œ๊ณ ๋ฆฌ์ฆ˜์ž…๋‹ˆ๋‹ค.

๐Ÿ“Š ์‹œ๊ฐ„/๊ณต๊ฐ„ ๋ณต์žก๋„ ๋ถ„์„

๋ณต์žก๋„
Time O(n)
Space O(1)

ํ”ผ๋“œ๋ฐฑ: ๋ฆฌ์ŠคํŠธ๋ฅผ ํ•œ ๋ฒˆ ์ˆœํšŒํ•˜๋ฉฐ ์ค‘๊ฐ„ ์ฐพ๊ธฐ, ๋’ค์ง‘๊ธฐ, ๋ณ‘ํ•ฉํ•˜๋Š” ๊ณผ์ •์ด ๋ชจ๋‘ ์„ ํ˜•์ด๋ฏ€๋กœ ์‹œ๊ฐ„ ๋ณต์žก๋„๋Š” O(n), ์ถ”๊ฐ€ ๊ณต๊ฐ„์€ ์ƒ์ˆ˜์ž…๋‹ˆ๋‹ค.

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

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

@reeseo3o reeseo3o merged commit ceb80c4 into DaleStudy:main May 16, 2026
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