key=int(input("输入要删除的数据:"))
head=0
while a[head][ 0]==key and head!=-1:
head=a[head][1]
p=q=head
if head!=- 1:
q=a[q][1]
while ① :
if a[q][0]==key:
②
else:
p=a[p][1]
q=a[q][1]
则划线①②处的代码分别为( )
A.①a[q][1]!=-1 ②a[p][1]=a[q][1] | B.①a[q][1]!=-1 ②a[q][1]=a[p][1] |
C.①q!=-1 ②a[q][1]=a[p][1] | D.①q!=-1 ②a[p][1]=a[q][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