求助一个算法问题(我觉得有难度),大家来试试看
8844-1f3b7f8c 这个数
我想把 "- "右边的字母放到左边来，1f就是左边第一个为f,3b就是左边第三个为b,7f就是左边第七个为f,8c就是左边第八个为c 最后排列应该是f8b844fc
请问怎么实现？用vb.net or c#都行, 注意:8844-1f3b7f8c这个数字会变，但是位数固定,模式也固定
[解决办法]
private void button1_Click(object sender, EventArgs e)
{
string[] strlist = new string[8];
for (int i = 0; i < 8; i++)
{
strlist[i] = " ";
}
string text = "8844-1f3b7f8c ";
string[] tmp = text.Split( '- ');
string text1 = tmp[0];
string text2 = tmp[1];
for (int i = 0; i < (text2.Length / 2); i++)
{
int idx = int.Parse(text2.Substring(i * 2, 1));
idx = idx - 1;
strlist[idx] = text2.Substring(i * 2 + 1, 1);
}
int m = 0;
text = " ";
for (int i = 0; i < 8; i++)
{
if (strlist[i] == " ")
{
strlist[i] = text1.Substring(m, 1);
m = m + 1;
}
text = text + strlist[i];
}
MessageBox.Show(text);
}
[解决办法]
Dim str As String = "8844-1f3b7f8c "
Dim temp() As String = Split(str, "- ")
Dim m(7) As Char
For i As Integer = 0 To 7
m(i) = " "
Next
Dim str2() As Char = temp(1).ToCharArray
For i As Integer = 0 To 7
If i Mod 2 = 0 Then
Dim j As Integer = Val((str2(i)))
m(j - 1) = str2(i + 1)
End If
Next
Dim k As Integer = 1
For i As Integer = 0 To 7
If m(i) = " " Then
m(i) = Mid(temp(0), k, 1)
k += 1
End If
Next
Dim output As String = " "
For i As Integer = 0 To 7
output += m(i)
Next
MsgBox(output)
[解决办法]
这样写字符跑来跑去，它老人家也累啊。那你最好用正则吧，把每个字符都放在Groups中，正则的Groups默认就是0开始，那样写的也专业一点，你就可以用 Groups[0] + Groups[3] 之类的写法做。这样逻辑也清析的可以表达出来。
[解决办法]
同意楼上～ 写正则～
