src/Todo.java - master - shuchkin/NETOLOGY-HW_LIST

src/Todo.java
57 строк2 KB
Sergey Shuchkin
0.2
23 дек 2025, 22:48
23 дек 2025, 22:48c536d49
import java.util.ArrayList;
import java.util.Iterator;

public class Todo {
    ArrayList<String> list;
    public Todo() {
        this.list = new ArrayList<>();
    }
    public boolean add(String name) {
        if (!this.list.contains(name)) {
            this.list.add(name);
            return true;
        }
        return false;
    }
    public boolean remove(int index) {
        try {
            this.list.remove(index);
            return true;
        } catch (Exception ex) {
            return false;
        }
    }
    public boolean remove(String name) {
        try {
            this.list.remove(name);
            return true;
        } catch (Exception ex) {
            return false;
        }
    }
    @Override
    public String toString() {
        if (this.list.isEmpty()) {
            return "";
        }
        StringBuilder result = new StringBuilder("Ваш список дел:\n");
        int index = 0;
        for (String s : this.list) {
            index++;
            result.append(String.format("%d. %s%n", index, s));
        }
        return result.toString();
    }
    public int removeByKeyword(String keyword) {
        Iterator<String> iterator = this.list.iterator();
        int deleted = 0;
        while (iterator.hasNext()) {
            String element = iterator.next();
            if (element.contains(keyword)) {
                iterator.remove(); // Безопасно удаляет текущий элемент
                deleted++;
            }
        }
        return deleted;
    }
}