y = Val(Text2.Text)
For i = ⑴
For j = ⑵
If a(j) > a(j + 1) Then
a(j) = a(j) + a(j + 1):a(j + 1) = a(j) - a(j + 1):a(j) = a(j) - a(j + 1)
End If
Next j
Next i
上述程序段中横线处可选语句为:
①(1)1 Toy–x (2)xTo y – i
②(1)x toy-1 (2)y -1to x + i -1 step -1
③(1)1 Toy–x (2)x toy + x –i – 1
④(1)x toy-1 (2)y-1 to i step -1
则(1)(2)处依次填入的语句组合正确的有( )