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[jamiebase] WEEK 10 Solutions#2589

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[jamiebase] WEEK 10 Solutions#2589
jamiebase wants to merge 1 commit intoDaleStudy:mainfrom
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@jamiebase
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@jamiebase jamiebase commented May 8, 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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dalestudy Bot commented May 8, 2026

๐Ÿ“Š jamiebase ๋‹˜์˜ ํ•™์Šต ํ˜„ํ™ฉ

์ด๋ฒˆ ์ฃผ ์ œ์ถœ ๋ฌธ์ œ

๋ฌธ์ œ ๋‚œ์ด๋„ ์œ ํ˜• ๋ถ„์„
invert-binary-tree Easy โœ… ์˜๋„ํ•œ ์œ ํ˜•

๋ˆ„์  ํ•™์Šต ์š”์•ฝ

  • ํ’€์ดํ•œ ๋ฌธ์ œ: 36 / 75๊ฐœ
  • ์ด๋ฒˆ ์ฃผ ์œ ํ˜• ์ผ์น˜์œจ: 100% (1๋ฌธ์ œ ์ค‘ 1๋ฌธ์ œ ์ผ์น˜)

๋ฌธ์ œ ํ’€์ด ํ˜„ํ™ฉ

์นดํ…Œ๊ณ ๋ฆฌ ์ง„ํ–‰๋„ ์™„๋ฃŒ
Array โ– โ– โ– โ– โ– โ– โ–ก 8 / 10 (Medium 5, Easy 3)
Matrix โ– โ– โ– โ– โ– โ–กโ–ก 3 / 4 (Medium 3)
Dynamic Programming โ– โ– โ– โ– โ– โ–กโ–ก 8 / 11 (Easy 1, Medium 7)
String โ– โ– โ– โ– โ–กโ–กโ–ก 6 / 10 (Medium 3, Easy 3)
Binary โ– โ– โ– โ–กโ–กโ–กโ–ก 2 / 5 (Easy 2)
Graph โ– โ– โ– โ–กโ–กโ–กโ–ก 3 / 8 (Medium 3)
Linked List โ– โ– โ–กโ–กโ–กโ–กโ–ก 2 / 6 (Easy 2)
Heap โ– โ– โ–กโ–กโ–กโ–กโ–ก 1 / 3 (Medium 1)
Tree โ– โ– โ–กโ–กโ–กโ–กโ–ก 3 / 14 (Medium 2, Easy 1)
Interval โ–กโ–กโ–กโ–กโ–กโ–กโ–ก 0 / 5 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
1 363 36 399 $0.000051

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๐Ÿท๏ธ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํŒจํ„ด ๋ถ„์„

  • ํŒจํ„ด: DFS
  • ์„ค๋ช…: ์ด ์ฝ”๋“œ๋Š” ์žฌ๊ท€๋ฅผ ์ด์šฉํ•˜์—ฌ ํŠธ๋ฆฌ์˜ ๋…ธ๋“œ๋ฅผ ๋ฐฉ๋ฌธํ•˜๋ฉฐ ์™ผ์ชฝ๊ณผ ์˜ค๋ฅธ์ชฝ ์ž์‹์„ ๊ต์ฒดํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ ๋™์ž‘ํ•ฉ๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ ๊นŠ์ด ์šฐ์„  ํƒ์ƒ‰(DFS) ํŒจํ„ด์— ์†ํ•ฉ๋‹ˆ๋‹ค.

๐Ÿ“Š ์‹œ๊ฐ„/๊ณต๊ฐ„ ๋ณต์žก๋„ ๋ถ„์„

๋ณต์žก๋„
Time O(n)
Space O(h)

ํ”ผ๋“œ๋ฐฑ: ๋ชจ๋“  ๋…ธ๋“œ๋ฅผ ํ•œ ๋ฒˆ์”ฉ ๋ฐฉ๋ฌธํ•˜๋Š” ์žฌ๊ท€์  ํŠธ๋ฆฌ ์ˆœํšŒ๋กœ ๊ตฌํ˜„๋˜์–ด ์žˆ์œผ๋ฉฐ, ๊ฐ ๋…ธ๋“œ์—์„œ ๊ต์ฒด ์ž‘์—…์ด ์ˆ˜ํ–‰๋ฉ๋‹ˆ๋‹ค. ๊ณต๊ฐ„ ๋ณต์žก๋„๋Š” ์žฌ๊ท€ ํ˜ธ์ถœ ์Šคํƒ์˜ ์ตœ๋Œ€ ๋†’์ด์ธ ํŠธ๋ฆฌ ๋†’์ด์— ๋น„๋ก€ํ•ฉ๋‹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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์ด๋ฒˆ์ฃผ๋„ ๊ณ ์ƒํ•˜์…จ์Šต๋‹ˆ๋‹ค!

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