const int numberOfUnitTypes = 8;
const int numberOfRolls = 4;

function PopulateMarketplace()
{
	<Clear marketplace>
	// Each integer in this array represents the stock of a particular kind of unit
	int unitCounts[numberOfUnitTypes] = {0, 0, 0, 0};

	for(int i = 0; i < numberOfRolls; i++)
	{
		int roll = <random number between 0..numberOfUnitTypes>
		unitCounts[roll]++;
	}

	int marketplaceIndex = 0;
	for(int i = 0; i < numberOfUnitTypes; i++)
	{
		if(unitCounts[i] != 0)
		{
			<Add unit to marketplace at position 'marketplaceIndex' with stock equal to 'unitCounts[i]'>
			marketplaceIndex++;
		}
	}
}