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Python实现二分查找(二分查询)

二分查询算法

def BinarySearch(a, target): 
    low = 0
    high = len(a) - 1
    while low  > 1,Java中是int mid = (low + high) >>> 1。
        mid = (low + high) // 2
        midVal = a[mid]
 
        if midVal   target:
            high = mid - 1
        else:
            return mid
    return -1 

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