Vetor merge com teste usando jUnit.

Testvetor.java

package testvetor;

/**
 *
 * @author Gabriel
 */
public class Testvetor {

    public static void main(String[] args) {
        int a[] = {1, 3, 5, 7};
        int b[] = {2, 4, 6, 8};


        int v[] = merge(a, b);
        
        for(int p:v){
            System.out.println(p);
        }
    }

    public static int[] merge(int a[], int b[]) {
        
        int[] v = new int[a.length + b.length];
        int iA = 0, iB = 0, iV = 0;
        
        while (iA < a.length && iB < b.length) {
            if (a[iA] < b[iB]) {
                v[iV] = a[iA];
                iA++;
            } else {
                v[iV] = b[iB];
                iB++;
            }
            iV++;
        }

        while (iA < a.length) {
            v[iV] = a[iA];
            iA++;
            iV++;
        }

        while (iB < b.length) {
            v[iV] = b[iB];
            iB++;
            iV++;
        }

        return v;
    }
}//merge

TestvetorTest.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package testvetor;

import org.junit.Assert;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 *
 * @author Gabriel
 */
public class TestvetorTest {
    
    public TestvetorTest() {
    }

    /**
     * Test of main method, of class Testvetor.
     */
    @Test
    public void testMain() {
    }

    /**
     * Test of merge method, of class Testvetor.
     */
    @Test
    public void testMerge() {
        int a[] = {1, 3, 5, 7};
        int b[] = {2, 4, 6, 8};
        int c[] = {1,2,3,4,5,6,7,8};
        int t[] = Testvetor.merge(a, b);
        Assert.assertArrayEquals(t, c);
        System.out.println("=== Test ===");
        for(int p:t){
            System.out.print(p+" ");
        }
    }
}