//排列组合
public class FullArrange {
/// <summary>
/// 排列组合
/// </summary>
/// <param name="str">字符串</param>
/// <param name="splitStr">分割的符号,比如";"</param>
/// <returns></returns>
public static List<string> GetArrangeResult(string str,string splitStr) {
str = str.Trim();
if (string.IsNullOrEmpty(str))
{
return new List<string>();
}
else if (str.Length == 1)
{
return new List<string>{ str};
}
else if (str.Length == 2)
{
string[] ca = str.Split(new char[] {Convert.ToChar(splitStr)});
return new List<string>() { ca[0].ToString() + splitStr + ca[1].ToString(), ca[1].ToString() + splitStr + ca[0].ToString() };
}
else
{
string[] array = str.Split(new char[] { Convert.ToChar(splitStr)});
List<string> Splittemp=new List<string>();
List<string> temp = GetArrangeString(array[0].ToString(), array[1].ToString());
for (int i = 2; i < array.Length; i++)
{
int count = temp.Count;
for (int j = 0; j < count; j++)
{
temp.AddRange(GetArrangeString(temp[j], array[i]));
temp.Remove(temp[j]);
j--;
count--;
}
}
foreach (var item in temp)
{
var mstr="";
foreach (var s in item) {
mstr += s.ToString()+ ";";
}
Splittemp.Add(mstr.TrimEnd(';'));
}
return Splittemp;
}
}
public static List<string> GetArrangeString(string parent, string child)
{
List<string> temp = new List<string>();
for (int i = 0; i <= parent.Length; i++)
{
temp.Add(parent.Insert(i, child.ToString()));
}
return temp;
}
}