摘要：2. 一个字符串中，分别输出奇数坐标字符或偶数坐标字符，奇数坐标的一行，偶数坐标的一行str_a = "hello world"#1for i in range(len(str_a)): if i %2 == 0: print(str_a[i]) else: print(str_a[i]) #2s 阅读全文

摘要：def num_a(a): if isinstance(a,int) and a > 1: lst =[] for i in range(2,a): for j in range(2,i): if i%j == 0: break else: lst.extend(num_b(a,i)) return 阅读全文

摘要：d = [[1,3,15,7],[2,4,6,8],[11,13,15,17]] row_max = {}a_column = {}for i in range(len(d)): row_max[i] = max(d[i]) lie = []for i in range(len(d[0])): a 阅读全文