23 lines
529 B
Python
23 lines
529 B
Python
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"""
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Author: Wenru
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"""
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from typing import List
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def bsearch(nums: List[int], target: int) -> int:
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"""Binary search of a target in a sorted array
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without duplicates. If such a target does not exist,
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return -1, othewise, return its index.
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"""
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low, high = 0, len(nums) - 1
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while low <= high:
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mid = low + (high - low) // 2
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if nums[mid] == target:
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return mid
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elif nums[mid] < target:
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low = mid + 1
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else:
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high = mid - 1
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return -1
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