BaseSort.java

package com.example.chapter2;

/**
 * sort base class
 * Created by siyehua on 2016/12/17.
 */
public class BaseSort<T> {
    public static void sort(Comparable[] a) {
    }

    public static boolean less(Comparable v, Comparable w) {
        return v.compareTo(w) < 0;
    }

    public static void exch(Comparable[] a, int i, int j) {
        Comparable tmp = a[i];
        a[i] = a[j];
        a[j] = tmp;
    }

    public static boolean isSorted(Comparable[] a) {
        for (int i = 1; i < a.length; i++) {
            if (less(a[i], a[i - 1])) return false;
        }
        return true;
    }

    public static void show(Comparable[] a) {
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }
    }
}