#! /usr/bin/env python3 #coding = utf-8 import itertools def josef(list0, start, interval): # start为开始删除的元素下标,interval为间隔 removed_list = [] # 建立用于保存被删除元素的列表 round_cycle = itertools.cycle(list0) # 建立循环遍历list0的生成器 for i in range(start): current_element = next(round_cycle) # 定位当前元素 removed_list.append(current_element) # 将start位置的元素放入删除列表 while len(removed_list) < len(list0): count = 0 # 计数放在for循环外,每剔除一个元素后归零 for i in range(interval): # 循环开始 while count < interval: # 计数开始 current_element = next(round_cycle) if current_element not in removed_list: count += 1 removed_list.append(current_element) print('removed_list={}'.format(removed_list)) return removed_list[-1] def main(): test_list = [i for i in range(1, 10)] print('test_list={}'.format(test_list)) print('last_one={}'.format(josef(list0=test_list, start=2, interval=3))) if __name__ == '__main__': main() # 结果输出 ''' test_list=[1, 2, 3, 4, 5, 6, 7, 8, 9] removed_list=[2, 5, 8, 3, 7, 4, 1, 6, 9] last_one=9 '''