Question

I have the following struct:-

public struct Cordination
{
    public int A;
    public int B;

    public Cordination(int a, int b)
    {
        A = a;
        B = b;
    }
}

And then i need to calculate the distance between any two places, so i need to loop through the struct and substract the x-axis of each places and the y-axis to get the distance between any two places in the struct and then return the shortest distance; But i am not sure how i can do that :-

public float distanceInMeter(Cordination[] cordination)
{
    for (i //codes goes here...)
}

Answer 1

Here is the answer to your question. You need to fix one coordinate and calculate distances to all others but trying not to repeat calculations. Therefore i will fix one coordinate and j will iterate through all others. Note that j is starting from i + 1 ensuring that you don’t repeat calculations.

public struct Cordination
{
    public int A;
    public int B;

    public Cordination(int a, int b)
    {
        A = a;
        B = b;
    }
}

public float distanceInMeter(Cordination[] cordination)
{
    float minDistance = float.MaxValue;
    for (int i = 0; i < cordination.Length - 1; i++)
    {
        for (int j = i + 1; j < cordination.Length; j++)
        {
            float dist = (float)Math.Sqrt(
                Math.Pow(cordination[i].A - cordination[j].A, 2.0) +
                Math.Pow(cordination[i].B - cordination[j].B, 2.0));
            if (dist < minDistance)
                minDistance = dist;
        }
    }
    return minDistance;
}