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string st = "1,2,3,23,3,24,34,23,3";
string[] stArr = st.Split(',');
ArrayList al = new ArrayList();
foreach (string str in stArr)
{
if(!al.Contains(str))
al.Add(str);
}
st = "";
for (int i = 0; i < al.Count; i++)
{
st += al[i] + ",";
}
st = st.Substring(0, st.Length - 1);
static void Main()
{
string st = "1,2,3,23,3,24,34,23,3";
string[] str = st.Split(',');
List<string> list = new List<string>();
for (int i = 0; i < str.Length; i++)
{
if (list.IndexOf(str[i].ToString()) == -1) //包含则不添加
{
list.Add(str[i]);
}
}
foreach (string i in list)
{
Console.WriteLine(i);
}
Console.ReadLine();
}
string st = "1,2,3,23,3,24,34,23,3";
string[] str = st.split(',');
string answer = "";
for(int i = 0;i< str.length ;i++)
{
for(int j = i+1;j < str.length ;j++)
{
if(str[i] != str[j])
{
answer += str[j] + ",";
}
}
}
answer = answer.subString(0,answer.length -1);