冒泡+快速+堆排序

package xie.struct;

import java.util.ArrayList;

public class Sort<T extends Comparable<T>> {
    public static final int QuickSort = 1;
    public static final int SelectMin = 4;
    public static final int MaoPao = 3;
    public static final int HeapSort = 2;

    private ArrayList<T> data;//数据存储

    public Sort() {
    }

    public void runSort(int mode) {
        switch (mode) {
        case 1:
            System.out.println("快速排序输出：");
            this.QuickSort(data, 0, data.size() - 1);
            break;
        case 2:
            System.out.println("堆排序输出：");
            this.heapSort();
            break;
        case 3:
            System.out.println("冒泡排序输出：");
            this.MaoPao();
            break;
        case 4:
            break;
        default:
            break;
        }
    }

    public void setData(ArrayList<T> a) {
        this.data = a;
    }

    public void addData(T data) {
        this.data.add(data);
    }

    public String toString() {
        for (int i = 0; i < data.size(); i++)
            System.out.print(data.get(i) + "/");
        return null;

    }

    public void MaoPao()
    {
        int i,j;
        int n=this.data.size();
        for(i=0;i<n;i++)
            for(j=1;j<n-i;j++){
                if(this.data.get(j-1).compareTo(this.data.get(j))>0)
                {
                T swap=this.data.get(j);
                this.data.set(j,this.data.get(j-1));
                this.data.set(j-1,swap);
                }
            }
    }

    /*
     * 快速排序代码
     */
    private void QuickSort(ArrayList<T> a, int left, int right) {
        if (left < right) {
            int low = left;
            int high = right;
            T key = a.get(low);
            while (low < high) {
                while (low < high && a.get(high).compareTo(key) >= 0)
                    high--;
                a.set(low, a.get(high));
                while (low < high && a.get(low).compareTo(key) < 0)
                    low++;
                a.set(high, a.get(low));
            }
            a.set(low, key);
            QuickSort(a, left, low - 1);
            QuickSort(a, low + 1, right);
        }
    }

    /*
     *
     * 堆排序函数代码
     */

    private void buildHeap() {
        int len = this.data.size();
        int i;
        for (i = len / 2 - 1; i >= 0; i--)
            this.adjustHeap(i);

    }

    private void adjustHeap(int index) {
        int len = this.data.size();
        int left = index * 2 + 1;
        int right = index * 2 + 2;
        int smaller = left;
        T swap;
        if (left > len - 1)
            return;
        if (right < len
                && this.data.get(left).compareTo(this.data.get(right)) > 0) {
            smaller = right;
        }
        if (smaller < len
                && this.data.get(index).compareTo(this.data.get(smaller)) > 0) {
            swap = this.data.get(smaller);
            this.data.set(smaller, this.data.get(index));
            this.data.set(index, swap);
            this.adjustHeap(smaller);
        }
    }

    private void heapSort() {
        this.buildHeap();
        int len = this.data.size();
        while (len > 0) {
            System.out.print(this.data.get(0)+"/");
            this.data.set(0, this.data.get(len - 1));
            this.data.remove(len - 1);
            len--;
            this.adjustHeap(0);
        }
    }

    /*
     *
     * 测试代码
     */

    public static void main(String args[]) {
        ArrayList<String> array = new ArrayList<String>();
        array.add("A");
        array.add("D");
        array.add("G");
        array.add("H");
        array.add("S");
        array.add("J");
        array.add("B");
        Sort<String> sort = new Sort<String>();
        sort.setData(array);
        sort.runSort(Sort.QuickSort);
        sort.toString();

        sort.setData(array);
        sort.runSort(Sort.MaoPao);
        sort.toString();

        sort.setData(array);
        sort.runSort(Sort.HeapSort);
    }
}

快速排序输出：
A/B/D/G/H/J/S/

冒泡排序输出：
A/B/D/G/H/J/S/

堆排序输出：
A/B/D/G/H/J/S/