void RemoveDoubleSymbols(char* str, int length)
{
	for(int i = 0; i < length; i++)
	{
		for(int k = i+1; k < length; k++)
		{
			if( str[i] == str[k] && str[i] != '\0' )
			{
				for(int j = k; j < length; j++)
				{
					str[j] = str[j + 1];
				}
				i--;
			}
		}
	}
}