// array[i] gives the number of players on team i
function permuteTeams(array, callback)
{
	let n = 0;
	result = []
	for (let i = 0; i < array.length; i++)
	{
		n += array[i];
		result = result.concat(new Array(array[i]).fill(i));
	}
	teamsUsed = clone(array);
	while (true)
	{
		callback(clone(array));
		let x = n-2;
		teamsUsed[result[x+1]] -= 1;
		teamsUsed[result[x]] -= 1;
		while (true)
		{
			if (result[x] < result[x+1])
			{
				firstX = teamsUsed[result[x]] == 0;
				var swap = 9999;
				var validSwap = false;
				for (let y = x+1; y < n; y++)
				{
					if (result[y] < swap && result[y] > result[x] && (!firstX || array[result[y]] != array[result[x]]))
					{
						if (teamsUsed[result[y]] == 0)
						{
							let ok = true;
							for (let t = 0; t < result[y]; t++)
							{
								if (teamsUsed[t] == 0 && categories[result[y]] == categories[t])
								{
									ok = false;
								}
							}
							if (ok)
							{
								swap = result[y];
								validSwap = true;
							}
						}
					}
				}
				if (validSwap)
				{
					teamsUsed[swap]++;
					result[x] = swap;
					z = 0;
					for (y = x+1; y < n; y++)
					{
						while (teamsUsed[z] == categories[z])
							z++;
						result[y] = z;
						teamsUsed[z]++;
					}
					break;
				}
			}
			x--;
			if (x < 0)
				break;
			teamsUsed[result[x]]--;
		}
		if (x < 0)
			break;
	}
}