private CarpakPoint StepsToLastLevel(int[,] carpark, CarpakPoint nextStart, List <string> result)
{
var lastStair = nextStart.Position;
for (int level = nextStart.Level; level < _carParkLevel - 1;)
{
var stairIdx = -1;
for (int i = 0; i < _carParkWidth; i++)
{
if (carpark[level, i] == 1)
{
stairIdx = i;
}
}
var stepToStair = (stairIdx > lastStair ? "R" : "L") + Math.Abs(stairIdx - lastStair);
result.Add(stepToStair);
lastStair = stairIdx;
for (var stair = level; stair < _carParkWidth; stair++)
{
if (carpark[stair, stairIdx] != 1)
{
result.Add("D" + (stair - level));
level += (stair - level);
break;
}
}
}
return(new CarpakPoint()
{
Level = 0,
Position = lastStair
});
}
private CarpakPoint FindStart(int[,] carPark)
{
var nextStart = new CarpakPoint();
for (int level = 0; level < _carParkLevel - 1; level++)
{
var startIdx = FindStart(carPark, level);
if (startIdx == -1)
{
continue;
}
nextStart = new CarpakPoint()
{
Level = level,
Position = startIdx
};
break;
}
return(nextStart);
}
