Practice›Java Fundamentals›Module 5. Arrays & Lists›5.3 Lists

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5.3 Lists — remove every zero

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Task

Fill in removeZeros so that it removes every zero from the list. The method returns nothing — it changes the given list.

The list contains two zeros in a row, so a forward loop would miss one. The program prints [4, 9].

Your solution

import java.util.ArrayList;

public class Main {

    public static void removeZeros(ArrayList<Integer> list) {
        // remove every zero - walk backwards

    }

    public static void main(String[] args) {
        ArrayList<Integer> l = new ArrayList<Integer>();
        l.add(0); l.add(4); l.add(0); l.add(0); l.add(9);
        removeZeros(l);
        System.out.println(l);
    }
}

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