Assessment 3_9_sample

Instructions

This assessment is designed to be completed in 10 minutes or less.

Copy the template below and get all the test cases to pass. Hard-coding answers will not receieve credit; your solution must work for valid arrays.

The problem

Imagine the user enters two lists of integers. Sum the two lists together and return the resulting list. For example if the user entered the lists [1,2,3] and [4,5,6,7], your code would return [5,7,9,7].

The grading script will remove the extra zeroes at the end automatically (and you can take a look at the cleanResult method in the template if you’re curious how it works).

Code Template and Test cases

import java.util.Arrays;

public class Assess3_9_Sample{

  public static int[] sumLists(int[] arr1, int[] arr2){
    int [] result = new int[100];
    return result;
  }

  public static int[] cleanResult(int[] array){
    return Arrays.stream(array).filter(num -> num != 0).toArray();    
  }

  public static void main(String[] args){
      int [] arr1a = {};
      int [] arr1b = {};
      int [] result1 = {};
      System.out.println("test1: " + Arrays.equals(cleanResult(sumLists(arr1a, arr1b)), result1));
      int [] arr2a = {1};
      int [] arr2b = {1};
      int [] result2 = {2};
      System.out.println("test2: " + Arrays.equals(cleanResult(sumLists(arr2a, arr2b)), result2));
      int [] arr3a = {1};
      int [] arr3b = {};
      int [] result3 = {1};
      System.out.println("test3: " + Arrays.equals(cleanResult(sumLists(arr3a, arr3b)), result3));
      int [] arr4a = {};
      int [] arr4b = {2};
      int [] result4 = {2};
      System.out.println("test4: " + Arrays.equals(cleanResult(sumLists(arr4a, arr4b)), result4));
      int [] arr5a = {2,7,3,1,9,5,5,4,6,8};
      int [] arr5b = {3, 2, 1};
      int [] result5 = {5, 9, 4, 1, 9, 5, 5, 4, 6, 8};
      System.out.println("test5: " + Arrays.equals(cleanResult(sumLists(arr5a, arr5b)), result5));
      System.out.println("test6: " + Arrays.equals(cleanResult(sumLists(arr5a, arr5b)), result5));
      System.out.println("test7: " + Arrays.equals(cleanResult(sumLists(arr5a, arr5b)), result5));
      System.out.println("test8: " + Arrays.equals(cleanResult(sumLists(arr5a, arr5b)), result5));
      System.out.println("test9: " + Arrays.equals(cleanResult(sumLists(arr5a, arr5b)), result5));

  }

}