几率差不多吧:以下有个程序,但是不能代表所有情况
package jspWeb;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
*
* @author itjob 远标培训
*
*/
public class TestRead {
public static void main(String[] args) throws IOException {
int i = 0;
List<Integer> nums = new ArrayList<Integer>();
while(i < 10000){
i ++;
int num = (int)(Math.random()*3);
nums.add(num);
}
//统计
double size = nums.size();
int count0 = 0;
int count1 = 0;
int count2 = 0;
for(Integer n : nums){
switch (n) {
case 0:
count0 ++;
break;
case 1:
count1 ++;
break;
case 2:
count2 ++;
break;
default:
break;
}
}
System.out.println("0几率:" + count0/size);
System.out.println("1几率:" + count1/size);
System.out.println("2几率:" + count2/size);
/**
* 结果:
* 0几率:0.3299
1几率:0.3433
2几率:0.3268
*/
}
}