排序0

抽象类提供一些公用方法。

package sort;import standard.StdOut;public abstract class Example {public abstract void sort(Comparable[] a);/** * 对元素进行比较 * @param v * @param w * @return */public boolean less(Comparable v, Comparable w){return v.compareTo(w) < 0;}/** * 交换元素位置 * @param a * @param i * @param j */public void exch(Comparable[] a, int i, int j){Comparable t = a[i];a[i] = a[j];a[j] = t;}/** * 打印数组 * @param a */public void show(Comparable[] a){for(int i = 0; i < a.length; i++){StdOut.print(a[i]+ " ");}StdOut.println();}}