Using Java with no imports, Method arrayOfSums returns an ArrayList of the same size as...

Using Java with no imports,

Method arrayOfSums returns an ArrayList of the same size as the largest ArrayList
This method needs to be overloaded so that it works for 2 to 4 sent Arraylists.

       arrayOfSums([2,4,7], [3,7,14]) returns [5,11,21]
       arrayOfSums([6,13,4,8], [7,5,9], [2,5,8,3]) returns [15, 23, 21, 11]
       arrayOfSums([6,13,4,8], [7,5,9], [2,5,8,3], [3,5,4,1,2]) returns [18, 28, 25, 12, 2]
       arrayOfSums([8,6], [2,4,10]) returns [10,10,10]
       arrayOfSums([2,2,2,2,2], [3,2,5,2,3], [1,3,1,3,1]) returns [6, 7, 8, 7, 6]
       arrayOfSums([11,12,13,14], [14,13,12,11], [10,10,10,10], [5,6,7,6,5]) returns [40, 41, 42, 41, 5]
       @param nums1 ArrayList of integers of varying sizes
       @param nums2 ArrayList of integers of varying sizes
       @param nums3 ArrayList of integers of varying sizes
       @param nums4 ArrayList of integers of varying sizes
       @return an array of the sums of the corresponding elements from each array
   */
public static ArrayList<Integer> arrayOfSums(ArrayList<Integer> nums1, ArrayList<Integer> nums2, ArrayList<Integer> nums3, ArrayList<Integer> nums4 )
{
       ArrayList<Integer> numsSums = new ArrayList<Integer>();
       return numsSums;

}// end arrayOfSums

//Overloaded methods here to compile

       public static ArrayList<Integer> arrayOfSums(ArrayList<Integer> nums1, ArrayList<Integer> nums2, ArrayList<Integer> nums3)
{
           ArrayList<Integer> numsSums = new ArrayList<Integer>();
        return numsSums;

}// end arrayOfSums
       public static ArrayList<Integer> arrayOfSums(ArrayList<Integer> nums1, ArrayList<Integer> nums2)
       {
           ArrayList<Integer> numsSums = new ArrayList<Integer>();
       return numsSums;
       }// end arrayOfSums

Expert Solution


public class ArrayListSums {
        public static void main(String[] args) {
                java.util.ArrayList list1 = new java.util.ArrayList();
                list1.add(2);
                list1.add(4);
                list1.add(7);
                
                java.util.ArrayList list2 = new java.util.ArrayList();
                list2.add(3);
                list2.add(7);
                list2.add(14);
                System.out.println(arrayOfSums(list1,list2));
                
        }
        public static java.util.ArrayList<Integer> arrayOfSums(java.util.ArrayList<Integer> nums1,
                        java.util.ArrayList<Integer> nums2, java.util.AbstractList<Integer> nums3,
                        java.util.ArrayList<Integer> nums4) {
                java.util.ArrayList<Integer> numsSums = new java.util.ArrayList<Integer>();
                // iterating through arraylist and getting elemenet from each list and adding to result
                for (int i = 0; i < nums1.size(); i++) {
                        int total=0;
                        //checking if num1 has valid index
                        if(nums1.size()>i)
                                total+=nums1.get(i);
                        //checking if num2 has valid index
                        if(nums2.size()>i)
                                total+=nums2.get(i);
                        //checking if num3 has valid index
                        if(nums3.size()>i)
                                total+=nums3.get(i);
                        //checking if num4 has valid index
                        if(nums4.size()>i)
                                total+=nums4.get(i);
                        
                        numsSums.add(total);
                }
                return numsSums;

        }// end arrayOfSums

        // Overloaded methods here to compile

        public static java.util.ArrayList<Integer> arrayOfSums(java.util.ArrayList<Integer> nums1,
                        java.util.ArrayList<Integer> nums2, java.util.ArrayList<Integer> nums3) {
                java.util.ArrayList<Integer> numsSums = new java.util.ArrayList<Integer>();
                // iterating through arraylist and getting elemenet from each list and adding to result
                for (int i = 0; i < nums1.size(); i++) {
                        int total=0;
                        //checking if num1 has valid index
                        if(nums1.size()>i)
                                total+=nums1.get(i);
                        //checking if num2 has valid index
                        if(nums2.size()>i)
                                total+=nums2.get(i);
                        //checking if num3 has valid index
                        if(nums3.size()>i)
                                total+=nums3.get(i);
                        
                        numsSums.add(total);
                }
                return numsSums;

        }// end arrayOfSums

        public static java.util.ArrayList<Integer> arrayOfSums(java.util.ArrayList<Integer> nums1,
                        java.util.ArrayList<Integer> nums2) {
                java.util.ArrayList<Integer> numsSums = new java.util.ArrayList<Integer>();
                // iterating through arraylist and getting elemenet from each list and adding to result
                for (int i = 0; i < nums1.size(); i++) {
                        int total=0;
                        //checking if num1 has valid index
                        if(nums1.size()>i)
                                total+=nums1.get(i);
                        //checking if num2 has valid index
                        if(nums2.size()>i)
                                total+=nums2.get(i);
                        numsSums.add(total);
                }
                return numsSums;
        }// end arrayOfSums
}

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venereology answered 1 year ago

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