Java配列をランダム化

import java.util.Date;
import java.util.Random;
/*
 *       ，      ，         ，         
 */
public class Main {
	
	public static void main(String args[]){
		int data[]=new int[]{1,42,51,62,8,94,23,13,40,5};
		//int p[]=getRandom(1,-8,100);
		//show(p);
		show(data);
		permuteBySort(data);
		show(data);
		randomizeInPlace(data);
		show(data);
	}
	
	/*
	 *       ,       ,      A[i]        P[i]，
	 *               
	 */
	private static void permuteBySort(int[] data)
	{
		int len=data.length;
		int len3=len*len*len;
		int P[]=getRandom(1,len3,len);
		
		//    
		for(int i=len-1; i>0; i--)
		{
			for(int j=0; jP[j+1])
				{
					int temp=data[j];
					data[j]=data[j+1];
					data[j+1]=temp;
					
					temp=P[j];
					P[j]=P[j+1];
					P[j+1]=temp;					
				}
			}
		}
	}
	/*
	 *   A[i]     A[i] A[n]      
	 */
	private static void randomizeInPlace(int[] data)
	{
		Date dt=new Date();
		Random random=new Random(dt.getSeconds());
		int len=data.length;
		for(int i=0; ib)
		{
			int temp=a;
			a=b;
			b=temp;
		}
		
		Date dt=new Date();
		Random random=new Random(dt.getSeconds());
		int res[]=new int[n];
		for(int i=0; i

/**
  *      
  * @author noam 
  */
 public class NRandom {
 
     /**
      *        0     1         
      * @param no     
      * @return       
      */
     public static int[] getSequence(int no) {
         int[] sequence = new int[no];
         for(int i = 0; i < no; i++){
             sequence[i] = i;
         }
         Random random = new Random();
         for(int i = 0; i < no; i++){
             int p = random.nextInt(no);
             int tmp = sequence[i];
             sequence[i] = sequence[p];
             sequence[p] = tmp;
         }
         random = null;
         return sequence;
     }