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i=1:j=100:key=11
Do While i<=j
mid1=i+(j-i)\4:mid2=i+(j-i)\2:mid3=j-(j-i)\4
If mid1=key Or mid2=Key Or mid3=key=Then
Exit Do
If i<=key And key<mid1 Then j=mid1-1:n1=n1+1
If mid1<key And key<mid2 Then
i=mid1+1:j=mid2-1:n2=n2+1
End If
If mid2<Key And key<mid3 Then
i=mid2+1:j=mid3-1:n3=n3+1
End If
If mid3<key And key<=j Then
i=mid3+1:n4=n4+1
End If
Loop
n=n1+n2+n3+n4
程序运行结束后，变量n的值是（ ）
| A．1 | B．2 | C．3 | D．4 |
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
