Java List Move Item moveUpInList(List list, int... indices)

Description

move Up In List

License

Open Source License

Declaration

public static <E> boolean moveUpInList(List<E> list, int... indices) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.Arrays;
import java.util.List;

public class Main {
    public static <E> boolean moveUpInList(List<E> list, int... indices) {
        // ignore calls which contain first index
        if (isInArray(indices, 0)) {
            return false;
        }//  www .java2s .c  o m
        Arrays.sort(indices);
        boolean changed = false;
        for (int i : indices) {
            changed |= moveUpInListSingleEntry(list, i);
        }
        return changed;
    }

    public static boolean isInArray(int[] array, int element) {
        for (int i : array) {
            if (i == element) {
                return true;
            }
        }
        return false;
    }

    private static <E> boolean moveUpInListSingleEntry(List<E> list, int index) {
        // ignore calls which try to move up first index
        if (index == 0) {
            return false;
        }
        E element = list.remove(index);
        list.add(index - 1, element);
        return true;
    }
}

Related

1. moveToFront(List aList, Object anObj)
2. moveTop(List list, int[] indices)
3. moveUp(final List list, final T toMoveUp)
4. moveUp(List