二分查找

Posted 2020-10-23 Colinshi

def bin_find(data, n):
    low = 0
    high = len(data) - 1
    while low <= high:
        mid = low + high // 2
        if data[mid] == n:
            return mid
        elif data[mid] < n:
            low = mid + 1
        elif data[mid] > n:
            high = mid - 1
    return