题型:综合题 题类:常考题 难易度:困难
浙江省杭州地区重点中学2018-2019学年高二下学期信息技术期中考试试卷
综上所述:原文为Jim is at room 4!,加密后输出密文为:NMQ MW EX VSSQ 2!
Private Sub Cmd1_Click()
Dim str1 As String, str2 As String, ch As String
Dim i As Integer, j As Integer, n As Integer
str1 = Text1.Text
str2 = ""
n = Len(Text1.Text)
For i = 1 To n
ch = Mid(str1, i, 1)
If Then
ch = Chr((Asc(ch) - 32))
End If
If ch >= "A" And ch <= "Z" Then
ch = Chr((Asc(ch) - Asc("A") + 4) Mod 26 + Asc("A"))
ElseIf ch >= "0" And ch <= "9" Then
ch =
End If
Next i
Text2.Text = str2
End Sub
1 | 5 | 7 | 9 |
4 | 6 | 10 | 15 |
8 | 11 | 12 | 19 |
14 | 16 | 18 | 21 |
已知数据逐行存储在数组a中,在杨氏矩阵数组中查找某数字是否存在的VB程序段如下:
cz = False : i = 1 : j = n
Do While j >= 1 And i <= n
If key < a(s) Then
⑵
ElseIf key > a(s) Then
⑶
Else
cz = True:Exit Do
End If
Loop
方框中的代码由以下三部分组成:
①j = j - 1
②s = (i - 1) * n + j
③i = i + 1
代码顺序正确的选项是( )
试题篮