digits.d

import std.algorithm;
import std.conv;
import std.stdio;
import std.c.stdlib;

auto begin = 1985;
auto end= 2015;

bool noRepeatDigits(ref string str)
{
	foreach(i, _; str)
	{
		if(count(str, str[i]) != 1) return false;
	}
	return true;
}

void fail()
{
	writeln("You're doing it wrong.");
	writeln("\t./digits begin end");
	exit(1);
}

void main(string[] args)
{
	if(args.length == 3)
	{
		begin = to!int(args[1]);
		end = to!int(args[2]);
		if(end <= begin)
		{
			fail();
		}
	}
	else if (args.length != 1)
	{
		fail();
	}
	
	foreach(i; begin .. (end + 1))
	{
		auto str = to!string(i);
		if(noRepeatDigits(str))
		{
			writeln(str);
		}
	}
}