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hELLO ยท Designed By ์ •์ƒ์šฐ.
glowing713

Frontend-Deep-Dive

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ์†Œ์ˆ˜ ์ฐพ๊ธฐ / ์™„์ „ ํƒ์ƒ‰(Brute-force Search)
Problem_Solving

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ์†Œ์ˆ˜ ์ฐพ๊ธฐ / ์™„์ „ ํƒ์ƒ‰(Brute-force Search)

2021. 3. 17. 17:07

์ด๋ฏธ์ง€๋ฅผ ํด๋ฆญํ•˜๋ฉด ๋ฌธ์ œ ์‚ฌ์ดํŠธ๋กœ ์ด๋™ํ•ฉ๋‹ˆ๋‹ค.

 

 

 

๐Ÿ’ญ ๋ฌธ์ œ ์ดํ•ด

 

ํ•œ ์ž๋ฆฌ์˜ ์ˆซ์ž๋“ค์ด ๋‚˜์—ด๋œ ๋ฌธ์ž์—ด์„ ์กฐํ•ฉํ•ด์„œ ๋งŒ๋“ค ์ˆ˜ ์žˆ๋Š” ์†Œ์ˆ˜์˜ ๊ฐฏ์ˆ˜๋ฅผ ๊ตฌํ•˜๋Š” ๋ฌธ์ œ์ด๋‹ค.

 

ํŒŒ์ด์ฌ์˜ ๊ธฐ๋ณธ ๋ชจ๋“ˆ์ธ itertools.permutations๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ชจ๋“  ๊ฒฝ์šฐ๋ฅผ ๊ตฌํ•˜๊ณ ,

์†Œ์ˆ˜ ํŒ๋ณ„์€ ์ˆซ์ž ๋ฒ”์œ„๊ฐ€ 0~9๋กœ ์ ์œผ๋ฏ€๋กœ 2~n-1๊นŒ์ง€ ๋‚˜๋ˆ ๋ณด๋ฉด์„œ ์ง์ ‘ ์ฐพ์•„๋ƒˆ๋‹ค.

 

 

 

 

๊ตฌํ˜„ ์–ธ์–ด: Python

 

from itertools import permutations

# ์†Œ์ˆ˜ ํŒ๋ณ„ ํ•จ์ˆ˜
def is_prime_number(num: int) -> bool:
    if num < 2:
        return False
    for i in range(2, num):
        if num % i == 0:
            return False
    return True


def solution(numbers):
    answer = set()  # ์ค‘๋ณต๋˜์ง€ ์•Š๋Š” ๋ชจ๋“  ๊ฒฝ์šฐ๋ฅผ ์ €์žฅํ•  set
    for i in range(1, len(numbers)+1):
        num_list = list(''.join(tup) for tup in permutations(numbers, i))
        for num in num_list:
            if is_prime_number(int(num)):
                answer.add(int(num))
    return len(answer)
์ €์ž‘์žํ‘œ์‹œ ๋น„์˜๋ฆฌ ๋ณ€๊ฒฝ๊ธˆ์ง€ (์ƒˆ์ฐฝ์—ด๋ฆผ)

'Problem_Solving' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ์นดํŽซ / ์™„์ „ ํƒ์ƒ‰(Brute-force Search)  (0) 2021.03.18
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๋‹ค๋ฆฌ๋ฅผ ์ง€๋‚˜๋Š” ํŠธ๋Ÿญ / ํ(Queue)  (0) 2021.03.12
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๊ฐ€์žฅ ํฐ ์ˆ˜ / ์ •๋ ฌ  (0) 2021.03.11
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๋„๋‘‘์งˆ / ๋™์  ๊ณ„ํš๋ฒ•(Dynamic-Programming)  (0) 2021.03.11
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๋“ฑ๊ตฃ๊ธธ / ๋™์  ๊ณ„ํš๋ฒ•(Dynamic-Programming)  (0) 2021.03.11
    'Problem_Solving' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€
    • [ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ์นดํŽซ / ์™„์ „ ํƒ์ƒ‰(Brute-force Search)
    • [ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๋‹ค๋ฆฌ๋ฅผ ์ง€๋‚˜๋Š” ํŠธ๋Ÿญ / ํ(Queue)
    • [ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๊ฐ€์žฅ ํฐ ์ˆ˜ / ์ •๋ ฌ
    • [ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๋„๋‘‘์งˆ / ๋™์  ๊ณ„ํš๋ฒ•(Dynamic-Programming)
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