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Rooted by: Average of an array
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  • Description

    Array may be empty.

     Code 
    import java.util.*;
public class Average {
   public static int averageFinder(int[] arr) {
     return  (int)Arrays.stream(arr).average().orElse(0d);
   };
}
     Test Cases 
    import org.junit.Test;
import static org.junit.Assert.assertEquals;
import org.junit.runners.JUnit4;

// TODO: Replace examples and use TDD development by writing your own tests

public class SolutionTest {
    @Test
    public void testSomething() {
        Average av = new Average();
        int arr1[] = {96, 98};
        assertEquals(97, av.averageFinder(arr1));
        int arr2[] = {94, 96, 98};
        assertEquals(96, av.averageFinder(arr2));
        int arr3[] = {};
        assertEquals(0, av.averageFinder(arr3));
    }
}
    View Run Output
  • Code
    • import java.util.*;
    • public class Average {
    • public static int averageFinder(int[] arr) {
    • return (int)Arrays.stream(arr).average().getAsDouble();
    • return (int)Arrays.stream(arr).average().orElse(0d);
    • };
    • }
     Test Cases
    • import org.junit.Test;
    • import static org.junit.Assert.assertEquals;
    • import org.junit.runners.JUnit4;
    • // TODO: Replace examples and use TDD development by writing your own tests
    • public class SolutionTest {
    • @Test
    • public void testSomething() {
    • Average av = new Average();
    • int arr1[] = {96, 98};
    • assertEquals(97, av.averageFinder(arr1));
    • int arr2[] = {94, 96, 98};
    • assertEquals(96, av.averageFinder(arr2));
    • int arr3[] = {};
    • assertEquals(0, av.averageFinder(arr3));
    • }
    • }