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  • find-minimum-in-rotated-sorted-array

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'''
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์‹œ๊ฐ„ ๋ณต์žก๋„: O(log n)
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- ์ด์ง„ ํƒ์ƒ‰์„ ์‚ฌ์šฉํ•˜์—ฌ ๋งค ๋ฐ˜๋ณต๋งˆ๋‹ค ๊ฒ€์ƒ‰ ๋ฒ”์œ„๋ฅผ ์ ˆ๋ฐ˜์œผ๋กœ ์ค„์ด๋ฏ€๋กœ O(log n)์ž…๋‹ˆ๋‹ค.
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๊ณต๊ฐ„ ๋ณต์žก๋„: O(1)
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- ์ถ”๊ฐ€์ ์ธ ๋ฐฐ์—ด์ด๋‚˜ ๋ฆฌ์ŠคํŠธ๋ฅผ ์‚ฌ์šฉํ•˜์ง€ ์•Š๊ณ , ๋ช‡ ๊ฐœ์˜ ๋ณ€์ˆ˜๋งŒ ์‚ฌ์šฉํ•˜๋ฏ€๋กœ O(1)์ž…๋‹ˆ๋‹ค.
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'''
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from typing import List
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class Solution:
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def findMin(self, nums: List[int]) -> int:
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left, right = 0, len(nums) - 1
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while left < right:
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mid = (left + right) // 2
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if nums[mid] > nums[right]:
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left = mid + 1 # ์ตœ์†Œ๊ฐ’์ด ์˜ค๋ฅธ์ชฝ์— ์žˆ์Œ
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else:
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right = mid # ์ตœ์†Œ๊ฐ’์ด mid ๋˜๋Š” ์™ผ์ชฝ์— ์žˆ์Œ
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return nums[left]

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