57 lines
1.2 KiB
Java
57 lines
1.2 KiB
Java
import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.Objects;
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public class SetArtilleriesGeneric<T> {
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private final ArrayList<T> _places;
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private final int _maxCount;
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public int getCount() {
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return _places.size();
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}
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public SetArtilleriesGeneric(int count) {
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_maxCount = count;
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_places = new ArrayList<>(count);
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}
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public int insert(T artillery) {
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return insert(artillery, 0);
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}
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public int insert(T artillery, int position) {
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if (position < 0 || position >= getCount() || getCount() == _maxCount) {
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return -1;
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}
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_places.add(position, artillery);
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return position;
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}
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public T remove(int position) {
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if (position < 0 || position >= getCount())
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{
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return null;
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}
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T result = _places.get(position);
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_places.remove(position);
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return result;
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}
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public T get(int position) {
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if (position < 0 || position >= getCount()) {
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return null;
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}
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return _places.get(position);
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}
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public Iterable<T> getArtilleries() {
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return () -> _places.stream().filter(Objects::nonNull).iterator();
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}
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}
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