confusearray.java

Java版拼图游戏

/*
 * @(#)ConfuseArray.java 1.0 03/08/22
 * Copyright 2003 Entao Zhang, All rights reserved.
 */

import java.util.Random;

/**
 * 打乱算法抽象类.
 */
public abstract class ConfuseArray {
	protected Random r = new Random();

	//算法运行失败的返回值
	public static final int confuseError=-2;

	//算法主方法.
	public abstract int runConfuse(int[] grids, int x, int y);

	//指定长度单一性随机打乱算法.
	protected void randomConfuse(int[] grids,int arrayLength,int n){
		int swap=0,temp=0;
		for (int i=0; i<n; i++){
			swap=r.nextInt(arrayLength-i)+i;
			temp=grids[i];
			grids[i]=grids[swap];
			grids[swap]=temp;
		}
	}
}