Week 2: Methods, strings and lists/19. Count shorter strings

Write the method

int countShorter(ArrayList<String> strings, int length)

which counts the number of strings in the list string that have less than length characters.


Example method call:
public static void main(String[] args){
    ArrayList<String> test = new ArrayList<>();
    test.add("Huu");
    test.add("Haa");
    test.add("Huhuu");
    test.add("Hohoo");

    int shorterthan4= countShorter(test, 4);
    System.out.println(shorterthan4);
}

Program outputs:
2






import java.util.Random;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Test{
    public static void main(String[] args){
        final Random r = new Random();
        
        test(new String[] {"first", "second", "third", "fourth", "five", "six", "7"}, 5);
        test("first second third fourth programming class method java variable".split(" "), 6);
        test("a ab abc abcd xyz xy x z".split(" "), 2);
    }
    
    public static void test(String[] l, int length) {
        ArrayList<String> list = new ArrayList<>(Arrays.asList(l));
        System.out.println("Testing with list " + list);
        System.out.print("Strings, that contain under " + length + " characters: ");
        System.out.println(countShorter(list, length));
        System.out.println("");
    }


    //ADD
    public static int countShorter(ArrayList<String> strings, int length) {
      int count = 0;
      for (String str: strings) {
        if (str.length() < length) {
          count++;
        }
      }
      return count;
    }



}
    





Testing with list [first, second, third, fourth, five, six, 7]
Strings, that contain under 5 characters: 3

Testing with list [first, second, third, fourth, programming, class, method, java, variable]
Strings, that contain under 6 characters: 4

Testing with list [a, ab, abc, abcd, xyz, xy, x, z]
Strings, that contain under 2 characters: 3