import random
flag=[False]*10
a=[0]*6
i=0
while i<6:
a[i]=random. randint (1,9)
if not flag[a[i]]:
flag[a[i]]=True
i+=1
print(a)
该程序执行后,列表 a 的值可能的是( )
A.[7,1,6,3,2,1] | B.[8,9,1,3,0,4] |
C.[5,7,3,3,8,2] | D.[6,3,5,2,4,1] |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2