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Remove Duplicate Characters - C# (Case Sensitive)
Func<string, string> RemoveDuplicate = delegate(string s)
{
BitArray _arr = new BitArray(256);
StringBuilder _sb = new StringBuilder();
s = s.ToLower();
for (int i = 0; i < s.Length; i++)
{
if (_arr[(int)s[i]])
{
continue;
}
else
{
_arr[(int)s[i]] = true;
_sb.Append(s[i]);
}
}
return _sb.ToString();
};
Remove Duplicate characters from string using BitArray.
This is case-sensitive removal.
