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ํ€ต์ •๋ ฌ 1

[Algorithm] ํ€ต ์ •๋ ฌ(Quick Sort)

ํ€ต ์ •๋ ฌ(quick sort) ? ์ •๋ ฌ ์•Œ๊ณ ๋ฆฌ์ฆ˜์˜ ๊ฝƒ ๊ธฐ์ค€์ (pivot)์„ ์ •ํ•ด์„œ, ๊ธฐ์ค€์ ๋ณด๋‹ค ์ž‘์€ ๋ฐ์ดํ„ฐ๋Š” ์™ผ์ชฝ, ํฐ ๋ฐ์ดํ„ฐ๋Š” ์˜ค๋ฅธ์ชฝ์œผ๋กœ ๋ชจ์œผ๋Š” ํ•จ์ˆ˜ ๊ฐ ์™ผ์ชฝ, ์˜ค๋ฅธ์ชฝ์€ ์žฌ๊ท€์šฉ๋ฒ•์„ ์‚ฌ์šฉํ•ด์„œ ๋‹ค์‹œ ๋™์ผ ํ•จ์ˆ˜๋ฅผ ํ˜ธ์ถœํ•ด ์œ„ ์ž‘์—… ๋ฐ˜๋ณต ํ•จ์ˆ˜๋Š” ์™ผ์ชฝ(left) + ๊ธฐ์ค€์ (pivot) + ์˜ค๋ฅธ์ชฝ(right)์„ ๋ฆฌํ„ด def qsort(data): if len(data) data[index]: left.append(data[index]) else: right.append(data[index]) #2.list comprehension ์‚ฌ์šฉ left = [item for item in data[1:] if pivot > item] right = [item for item in data[1:] if pivot

์•Œ๊ณ ๋ฆฌ์ฆ˜ 2024.02.05
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