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12-mong3125#41

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mong3125 merged 1 commit intomainfrom
12-mong3125
Apr 10, 2024
Merged

12-mong3125#41
mong3125 merged 1 commit intomainfrom
12-mong3125

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@mong3125 mong3125 commented Mar 28, 2024 •
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πŸ”— 문제 링크

기타 레슨

βœ”οΈ μ†Œμš”λœ μ‹œκ°„

λͺ» ν’€κ³  아이디어 λ΄„
보고 λ‚˜μ„œ 30λΆ„

✨ μˆ˜λ„ μ½”λ“œ

문제 μ„€λͺ…

image
μž…λ ₯으둜
N M
l[0], l[1], l[2]...
μ΄λ ‡κ²Œ λ“€μ–΄μ˜€λŠ”λ° N은 l의 길이이고 M은 λ ˆμ½”λ“œ κ°œμˆ˜μž…λ‹ˆλ‹€. l은 κ°•μ˜μ˜μƒ κΈΈμ΄μ΄κ³ μš”.

κ°•μ˜λŠ” μ—°μ†ν•΄μ„œ μ €μž₯을 ν•΄μ•Όν•©λ‹ˆλ‹€. 이 λ•Œ λ ˆμ½”λ“œ κ°œμˆ˜λ‚΄λ‘œ μ €μž₯ν•˜κΈ° μœ„ν•΄μ„œ λ ˆμ½”λ“œ μ΅œμ†Œ 길이λ₯Ό κ΅¬ν•˜λŠ” λ¬Έμ œμž…λ‹ˆλ‹€.

λ¬Έμ œλŠ” 긴데 μ΄ν•΄ν•˜λ©΄ μ΄λ ‡κ²Œ κ°„λ‹¨ν•˜κ²Œ 이해할 수 μžˆμŠ΅λ‹ˆλ‹€.

* 정닡은 0κ³Ό λͺ¨λ“  κ°•μ˜μ‹œκ°„μ„ ν•©ν•œ μ‹œκ°„ 사이에 μžˆμ„κ²ƒμ΄λ‹€.
* 0κ³Ό ν•©ν•œ μ‹œκ°„ 사이에 μ‘΄μž¬ν•˜λŠ” 값을 μ°ΎκΈ°μœ„ν•΄ μ΄λΆ„νƒμƒ‰μœΌλ‘œ μ°ΎλŠ”λ‹€.

minBlue(λ²”μœ„ μ‹œμž‘, λ²”μœ„ 끝) {
    λ²”μœ„ 끝이 μ‹œμž‘λ³΄λ‹€ μž‘μœΌλ©΄ μ΅œλŒ€κ°’μ„ λ°˜ν™˜ν•œλ‹€.
    
    μ‹œμž‘κ³Ό 끝의 쀑간값을 κ΅¬ν•œλ‹€.
    μ€‘κ°„κ°’μœΌλ‘œ λ…Ήν™”κ°€ κ°€λŠ₯ν•œμ§€ κ²€μ‚¬ν•œλ‹€.
    κ°€λŠ₯ν•˜λ‹€λ©΄ μ‹œμž‘λΆ€ν„° 쀑간-1 λ²”μœ„μ—μ„œ λ‹€μ‹œ μ°Ύκ³ , μ—†λ‹€λ©΄ 쀑간값을 λ°˜ν™˜ν•œλ‹€.
    λΆˆκ°€λŠ₯ν•˜λ‹€λ©΄ 쀑간+1λΆ€ν„° 끝사이 λ²”μœ„μ—μ„œ μ°ΎλŠ”λ‹€.
}

πŸ“š μƒˆλ‘­κ²Œ μ•Œκ²Œλœ λ‚΄μš©

  • 정닡이 aλΆ€ν„° b사이에 있고 쑰건을 λ§Œμ‘±μ‹œν‚€λŠ” 값을 μ°ΎλŠ” λ¬Έμ œμΌλ•Œ μ΄λΆ„νƒμƒ‰μœΌλ‘œ ν•΄κ²°ν•  수 μžˆλ‹€.

@mong3125 mong3125 requested review from YIM2UL2ET, kjs254 and rivkms March 28, 2024 14:38
@tgyuuAn tgyuuAn removed the request for review from kjs254 March 28, 2024 16:49
@YIM2UL2ET YIM2UL2ET changed the title BOJ1243_이진탐색 java solution 12-mong3125 Mar 29, 2024
YIM2UL2ET
YIM2UL2ET approved these changes Apr 1, 2024
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이거 λͺ‡ 일 λ™μ•ˆ κ³ λ―Όν•˜λ‹€κ°€ κ²°κ΅­ λͺ» ν’€μ—ˆλŠ”λ° 이뢄탐색 μ΄μ—ˆκ΅°μš”..
λŒ€μ²΄ 이런 풀이λ₯Ό μ–΄λ–»κ²Œ ν•˜λŠ” 건지 μ‹Άμ–΄μ„œ 계속 μ½μ–΄λ³΄κ²Œ λ˜λ„€μš”.
ν•œ 수 μ–»μ–΄κ°‘λ‹ˆλ‹€. μˆ˜κ³ ν•˜μ…¨μŠ΅λ‹ˆλ‹€.

kjs254
kjs254 approved these changes Apr 4, 2024
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μ†μœΌλ‘œ 풀기도 μ–΄λ €μš΄ κ±Έ μ–΄λ–»κ²Œ μ½”λ“œλ‘œ κ΅¬ν˜„ν• μ§€ 막연해 λ³΄μ˜€λŠ”λ° 이뢄탐색을 μ΄μš©ν•˜λ©΄ κ°„λ‹¨ν•˜κ³  λΉ λ₯΄κ²Œ κ΅¬ν˜„ν•  수 μžˆκ΅°μš”.

μ΄λΆ„νƒμƒ‰λ§Œ 생각해낸닀면 mid κ°’μœΌλ‘œ λ…Ήν™”κ°€ κ°€λŠ₯ν•œμ§€ νŒλ…ν•˜λŠ” 쑰건을 κ΅¬ν˜„ν•˜λŠ” 것이 이 문제의 ν•΅μ‹¬μœΌλ‘œ λ³΄μž…λ‹ˆλ‹€.

Comment thread mong3125/이진탐색/BOJ2343_κΈ°νƒ€λ ˆμŠ¨.java Outdated
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@kjs254 kjs254 Apr 4, 2024

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μœ„μ˜ can() ν•¨μˆ˜λ‘œ mid μ‚¬μ΄μ¦ˆλ‘œ λ…Ήν™”κ°€ κ°€λŠ₯ν•œμ§€ νŒλ…ν•˜λŠ”κ±Έλ‘œ λ³΄μž…λ‹ˆλ‹€.
mid 값을 담은 stackμ—μ„œ κ°•μ˜μ‹œκ°„μ„ ν•˜λ‚˜μ”© λΉΌκ°€λ©΄μ„œ λͺ¨λ“  κ°•μ˜κ°€ M개의 λΈ”λ£¨λ ˆμ΄μ— λ‹΄κΈΈ 수 μžˆλŠ”μ§€ νŒλ…ν•˜λŠ”κ²ƒμœΌλ‘œ μ΄ν•΄ν•˜λ©΄ λ κΉŒμš”?

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@mong3125 mong3125 Apr 10, 2024

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λ„€ λ§žμŠ΅λ‹ˆλ‹€!

@mong3125 mong3125 removed the request for review from rivkms April 10, 2024 14:27
@mong3125 mong3125 merged commit b75b28a into main Apr 10, 2024
@mong3125 mong3125 deleted the 12-mong3125 branch April 10, 2024 14:27
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