40 lines
1.1 KiB
Java
40 lines
1.1 KiB
Java
package net.abhinavsarkar.spelhelper;
|
|
|
|
import static java.util.Collections.unmodifiableList;
|
|
import static java.util.Collections.unmodifiableSet;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.Collections;
|
|
import java.util.HashSet;
|
|
import java.util.List;
|
|
import java.util.Set;
|
|
|
|
final class ImplicitMethods {
|
|
|
|
public static <T> Set<T> distinct(final List<? extends T> list) {
|
|
return unmodifiableSet(new HashSet<T>(list));
|
|
}
|
|
|
|
public static <T extends Comparable<? super T>> List<T> sorted(
|
|
final List<? extends T> list) {
|
|
List<T> temp = new ArrayList<T>(list);
|
|
Collections.sort(temp);
|
|
return unmodifiableList(temp);
|
|
}
|
|
|
|
public static <T> List<T> reversed(final List<? extends T> list) {
|
|
List<T> temp = new ArrayList<T>(list);
|
|
Collections.reverse(temp);
|
|
return unmodifiableList(temp);
|
|
}
|
|
|
|
public static <T> List<T> take(final List<T> list, final int n) {
|
|
return unmodifiableList(list.subList(0, n));
|
|
}
|
|
|
|
public static <T> List<T> drop(final List<T> list, final int n) {
|
|
return unmodifiableList(list.subList(n, list.size()));
|
|
}
|
|
|
|
}
|