How can I pass an entire array to a method?
private void PassArray() {
String[] arrayw = new String[4];
//populate array
PrintA(arrayw[]);
}
private void PrintA(String[] a) {
//do whatever with array here
}
How do I do this correctly?
If you are too lazy ;) to declare variable.
import static org.junit.Assert.assertEquals
public class BinarySearch
{
public static void main(String[] args)
{
search(new int[] {-1,0,3,5,9,12}, 9); //creating and passing array
}
public static int search(int[] nums, int target)
{
//write some code
return -1;
}
}
This is very useful for unit test like below
assertEquals(4,search(new int[] {-1,0,3,5,9,12}, 9));
assertEquals(-1,search(new int[]{-1,0,3,5,9,12}, 2));
class test
{
void passArr()
{
int arr1[]={1,2,3,4,5,6,7,8,9};
printArr(arr1);
}
void printArr(int[] arr2)
{
for(int i=0;i<arr2.length;i++)
{
System.out.println(arr2[i]+" ");
}
}
public static void main(String[] args)
{
test ob=new test();
ob.passArr();
}
}