Python 手写代码面试题, 用 Python 代码实现 Python 内置函数 max

def custom_sum(iterable, start=0): total = start for item in iterable: total += item return total

def custom_min(*args): if len(args) == 0: raise ValueError('min() arg is an empty sequence') min_value = args[0] for value in args[1:]: if value < min_value: min_value = value return min_value

def quicksort(arr): if len(arr) <= 1: return arr pivot = arr[len(arr) // 2] left = [x for x in arr if x < pivot] middle = [x for x in arr if x == pivot] right = [x for x in arr if x > pivot] return quicksort(left) + middle + quicksort(right)

def binary_search(arr, target): left, right = 0, len(arr) - 1 while left <= right: mid = (left + right) // 2 if arr[mid] == target: return mid elif arr[mid] < target: left = mid + 1 else: right = mid - 1 return -1