Java List Swap swap(List list, int minIndex, int maxIndex)

Declaration

public static <T> List<T> swap(List<T> list, int minIndex, int maxIndex) 

Method Source Code

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

import java.util.ArrayList;

import java.util.List;

public class Main {
    /**//from  w  w w . j  a v  a 2s.  c  om
     * Method to swap elements at two indexes
     * 
     * @param list
     * @param minIndex
     * @param maxIndex
     * @return {@link List<T>}
     */
    public static <T> List<T> swap(List<T> list, int minIndex, int maxIndex) {
        if (list != null && list.size() > 2 && maxIndex > minIndex) {
            List<T> updatedList = new ArrayList<>();
            T elementAtMinIndex = list.get(minIndex);
            T elementAtMaxIndex = list.get(maxIndex);
            for (int i = 0; i < list.size(); i++) {
                if (i != minIndex && i != maxIndex) {
                    updatedList.add(i, list.get(i));
                } else if (i == minIndex) {
                    updatedList.add(i, elementAtMaxIndex);
                } else if (i == maxIndex) {
                    updatedList.add(i, elementAtMinIndex);
                }
            }
            return updatedList;
        }
        return null;
    }
}

Related

1. swap(List list, Object object1, Object object2)
2. swap(List a, int i, int j)
3. swap(List items, int index1_, int index2_)
4. swap(List list, int i1, int i2)
5. swap(List list, int index1, int index2)
6. swapElements(List list, T element1, T element2)
7. swapItems(final List data, int from, int to)
8. swapListElements(List list, int idx1, int idx2)