Java ArrayList Swap swap(ArrayList data, int i, int j)

Description

Swap two values in an object array.

License

Open Source License

Parameter

Parameter	Description
data	Data
i	First position
j	Second position
T	Object type

Declaration

public static <T> void swap(ArrayList<T> data, int i, int j) 

Method Source Code

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

import java.util.ArrayList;

public class Main {
    /**// ww w.j  a va  2  s.  c o m
     * Swap two values in an object array.
     * 
     * @param data
     *            Data
     * @param i
     *            First position
     * @param j
     *            Second position
     * @param <T>
     *            Object type
     */
    public static <T> void swap(ArrayList<T> data, int i, int j) {
        T tmp = data.get(i);
        data.set(i, data.get(j));
        data.set(j, tmp);
    }

    /**
     * Swap two values in an object array.
     * 
     * @param data
     *            Data
     * @param i
     *            First position
     * @param j
     *            Second position
     * @param <T>
     *            Object type
     */
    public static <T> void swap(T[] data, int i, int j) {
        T tmp = data[i];
        data[i] = data[j];
        data[j] = tmp;
    }

    /**
     * Swap two values in an integer array.
     * 
     * @param data
     *            Data
     * @param i
     *            First position
     * @param j
     *            Second position
     */
    public static void swap(int[] data, int i, int j) {
        int tmp = data[i];
        data[i] = data[j];
        data[j] = tmp;
    }

    /**
     * Swap two values in a byte array.
     * 
     * @param data
     *            Data
     * @param i
     *            First position
     * @param j
     *            Second position
     */
    public static void swap(byte[] data, int i, int j) {
        byte tmp = data[i];
        data[i] = data[j];
        data[j] = tmp;
    }

    /**
     * Swap two values in a double array.
     * 
     * @param data
     *            Data
     * @param i
     *            First position
     * @param j
     *            Second position
     */
    public static void swap(double[] data, int i, int j) {
        double tmp = data[i];
        data[i] = data[j];
        data[j] = tmp;
    }

    /**
     * Swap two values in a float array.
     * 
     * @param data
     *            Data
     * @param i
     *            First position
     * @param j
     *            Second position
     */
    public static void swap(float[] data, int i, int j) {
        float tmp = data[i];
        data[i] = data[j];
        data[j] = tmp;
    }
}

Related

1. swap(ArrayList numbers, int i, int j)
2. swap(ArrayList dataStrs, int i, int j)
3. swapRemove(ArrayList list, int index)