I am trying to calculate the distance of each player to the location and keep track of which player has the least distance value so far

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However, im just not sure how to do it. Basically, my goal with this method is to return the Assistant who is available and nearest to the given location.

What I have tried:

This is what my method looks like right now, and i just cannot figure how to make it work.

Java

public Assistant findNearestAvailable(int location)
    {
        Iterator<Assistant> it = assistants.iterator();
        int closetDistance = 0;
        while(it.hasNext()){
            Assistant assistant = it.next();
            int distance = location - assistant.getLocation();
            Assistant closetAssistant;
            if(distance < assistant.getLocation() && assistant.isAvailable()){
                closetDistance++;
                }
            }
        }
        return null;
    }

Posted 20-Nov-22 4:29am

Freddie Francis

Updated 20-Nov-22 5:47am

Dave Kreskowiak

v2

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Richard MacCutchan · Accepted Answer · 2022-11-20T04:52:00

Java

if(distance < assistant.getLocation() && assistant.isAvailable()){
    closetDistance++;

That code just adds 1 to the variable, so it does not tell you anything about who is closest. You need something like:

SET closestDistance to Integer.MAX_VALUE
SET closestAssistant to NULL
FOREACH assistant in Assistants() // check all assistants
DO
    IF assistant.isAvailable() // but only the availalble ones
    THEN
        int distance = location - assistant.getLocation()
        if distance < closestDistance // if this is closer than any previous ones
        THEN
            closestDistance = distance // save the details
            closestAssistant = assistant
        FI
    FI
DONE

At the end of the loop closestDistance should contain the distance to the nearest availalble assistant, and closestAssistant will be the assistant in question.