Amazon Practice 1

amazon1.java

// IMPORT LIBRARY PACKAGES NEEDED BY YOUR PROGRAM
import java.util.*;
import java.util.Arrays;
import java.util.List;
// SOME CLASSES WITHIN A PACKAGE MAY BE RESTRICTED
// DEFINE ANY CLASS AND METHOD NEEDED
// CLASS BEGINS, THIS CLASS IS REQUIRED
public class Solution
{        
  // METHOD SIGNATURE BEGINS, THIS METHOD IS REQUIRED
    public List<Integer> cellCompete(int[] states, int days)
    {
        for(int j=0; j<days; j++){
            int[] nextDay = new int[states.length];
                for(int i=0; i<states.length; i++){
            
                    int next;
                    int previous;
            
                    if(i==0){
                        previous = 0;
                    }
                    else{
                        previous = states[i-1];
                    }
                    
                    if(i==states.length-1){
                        next = 0;
                    }
                    else{
                        next = states[i+1];
                    }
                    
                    if(previous==next){
                        nextDay[i] = 0;
                    }
                    else{
                        nextDay[i] = 1;
                    }
                }
                states = nextDay;
        }

        return this.toList(states);
    }
    
    public List<Integer> toList(int[] ints)
    {
        List<Integer> intList = new ArrayList<Integer>();
        for (int index = 0; index < ints.length; index++)
        {
            intList.add(ints[index]);
        }
        return intList;
    }
  // METHOD SIGNATURE ENDS
}

Is the following code is being run at the running or compiling mode!

yes. You have to importthe class though

import java.util.ArrayList;