Question

The following code calculate the nearest distance in two points.
The part if(j==0) is tested redundantly for UsedServices.Count-1 time,
is there any way not to introduce this redudancy?
Of course we can separate the case out from for loop, I am just thinking is there a more elegant way to achieve this.

double[] nearestDistant=new double[UnUsedServices.Count];

for (int i=0;i<UnUsedServices.Count;i++)
{
    for (int j=0;j<UsedServices.Count;j++)
    {
        double distance=GetDistance(UnUsedServices[i].coords, 
                                    UsedServices[j].coords);

        if (j==0) //Used once and redundant for UsedServices.Count-1 time!
        {
            nearestDistant[i] = distance;
        }
        else
        {
            nearestDistant[i] = Math.Min(nearestDistant[i], distance);
        }
    }
}

Answer 1

You could initialize nearestDistant[i] to Double.MaxValue before the inner loop and then you can remove the if.

The side effect of this is when UsedServices.Count == 0 the nearestDistant[i] would be set to Double.MaxValue. If that’s ok with you.