Practice›Java Fundamentals›Module 10. Collections›10.2 HashSet

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10.2 HashSet — count words in an allowed set

Total: 0 / 3 pts

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Task

Fill in countInSet so that it returns how many words are members of allowed — counting every occurrence, not just distinct ones.

The program prints 3.

Your solution

import java.util.HashSet;
import java.util.Set;

public class Main {

    public static int countInSet(Set<String> allowed, String[] words) {
        // count words that are members of the set

    }

    public static void main(String[] args) {
        Set<String> allowed = new HashSet<String>();
        allowed.add("a");
        allowed.add("b");
        System.out.println(countInSet(allowed, new String[]{"a", "x", "b", "b"}));
    }
}

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