python 二分查找代码

二分查找的条件是必须是排好的数字

"""二分查找"""

def binary_searhc(arr, target):
    n = len(arr)
    left = 0
    right = n-1
    while left <= right :
        mid = (left + right)//2
        if arr[mid] < target:
            left = mid + 1
        elif arr[mid] > target:
            right = mid - 1
        else:
            print(mid)
            return True
    return False

if __name__ == '__main__':
        l = [1,2,3,4,6,8]
        if binary_searhc(l,6):
             print("ok")