模拟n步一维随机游走的情况。

package randomWalk;

import java.util.Random;
import java.util.Scanner;

public class RandomWalk {

    public static void main(String[] args) {

        Scanner console = new Scanner(System.in);
        System.out.print("intput the steps you want to walk:");
        int steps =console.nextInt();
        randomWalk(steps);

    }
    public static void randomWalk(int steps)
    {
        System.out.println("walking " + steps + " steps" );

        Random r =new Random();

        int position =0,max = position;
        int direction = 0;
        for(int i = 0;i< steps;i++)
        {
           direction = r.nextInt(2);
           if(direction == 1)
              position += 1;
           else
              position -= 1;
           if(position > max)
                max = position;
           System.out.println("position = " + position);
        }
        System.out.println("max postion = " + max);
    }
}

结果类似于：

intput the steps you want to walk:7
walking 7 steps
position = 1
position = 0
position = -1
position = -2
position = -3
position = -2
position = -1
max postion = 1