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key = 2 * Int(Rnd * 25) + 1
For i = 1 To 9
low = i + 1: high = 10: flag = False
Do While low <= high And Not flag
m = (low + high) \ 2
If key - a(i) < a(m) Then
high = m - 1
ElseIf key - a(i) > a(m) Then
low = m + 1
Else
flag = True
End If
Loop
If flag Then Exit For ' Exit For 表示退出循环
Next i
数组元素a(1)到a(10)的值依次为“7,9,12,12,19,28,32,34,34,40 ”，执行该程序段后，变量i和m的值可能的是（ ）
| A．1 4 | B．2 8 | C．3 6 | D．5 7 |
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
