Example usage for java.util List subList

Introduction

In this page you can find the example usage for java.util List subList.

Prototype

List<E> subList(int fromIndex, int toIndex);

Source Link

Document

Returns a view of the portion of this list between the specified fromIndex , inclusive, and toIndex , exclusive.

Usage

From source file:Main.java

public static <T> List<T> tail(List<T> col) {

    return col.isEmpty() ? col : col.subList(1, col.size());

}

From source file:Main.java

public static <T> List<T> limit(List<T> source, int size) {
    return new ArrayList<>(source.subList(0, size));
}

From source file:Main.java

public static <V> V[] subarray(V[] type, List<V> list, int from, int to) {
    return list.subList(from, to).toArray(type);
}

From source file:Main.java

/**
 *
 * @param array the array to be converted into list
 * @param fromIndex the index of the first element, inclusive, to be sorted
 * @param toIndex the index of the last element, exclusive, to be sorted
 * @return//from ww w .  ja v a2  s  .  c  om
 */
public static <E> List<E> toList(E[] array, int fromIndex, int toIndex) {
    List<E> list = Arrays.asList(array);
    return list.subList(fromIndex, toIndex);
}

From source file:Main.java

public static String[] subarray(List<String> list, int from, int to) {
    return list.subList(from, to).toArray(new String[0]);
}

From source file:Main.java

public static List<?> subList(List<?> list, int fromIndex, int toIndex) {
    return list.subList(fromIndex, toIndex);
}

From source file:Main.java

public static <T> List<T> head(List<T> list, int n) {
    if (n <= list.size()) {
        return list.subList(0, n);
    } else {//w  ww. j a  v a  2 s  .  c om
        return list;
    }
}

From source file:Main.java

public static void resize(List list, int newSize) {
    if (newSize < list.size()) {
        list.subList(newSize, list.size()).clear();
    } else {/* w  w  w.  j  a  v  a 2 s.c  o  m*/
        list.addAll(Collections.nCopies(newSize - list.size(), null));
    }
}

From source file:Main.java

/**
 * Shift object to the bottom of list/*w  w  w. j  a v  a 2s . c  o m*/
 *
 * @param list  list
 * @param index object index
 */
public static void shiftItemToBack(List<?> list, int index) {
    if (index >= 0) {
        Collections.rotate(list.subList(0, index + 1), 1);
    }
}

From source file:Main.java

/**
 * Shift object to the top of list// w  w  w .  j a v  a 2 s  . c  om
 *
 * @param list  list
 * @param index object index
 */
public static void shiftItemToFront(List<?> list, int index) {
    if (index >= 0) {
        Collections.rotate(list.subList(index, list.size()), -1);
    }
}