Question

c# 字符串操作 连续相同字符保留一个。该怎么写

Answer 1

这个不是很简单吗?
string oldStr = "afaaabdddddddvvdse";
string newStr = "";
char oldChar = '_';
for(int i = 0;i < oldStr.Length;i++)
{
if(oldChar != oldStr[i])
{
oldChar = oldStr[i];
newStr += oldStr[i];
}
}
MessageBox.Show(newStr);
输出:afabdvdse

Answer 2

public string ReStr(string str)
{
string s="";
char[] strs=str.ToCharArray();
for (int i = 0; i < strs.Length-1; i++)
{
if (strs[i] != strs[i + 1])
{
s += strs[i].ToString();
}
}
s += strs[strs.Length - 1];
return s;
}

Answer 3

public static string getStr(string str)
{
string s="";
char[] strs=str.ToCharArray();
for (int i = 0; i < strs.Length; i++)
{
if (i != strs.Length - 1)
{
if (strs[i] != strs[i + 1])
{
s += strs[i].ToString();
}
}
}
s += strs[strs.Length - 1];
return s;
}