（JAVA保留小数问题，基础）Probability hdu2131

2021-06-28 23:04

阅读：444

标签：hal font win alc nsca app limit nta blank

Probability

链接：http://acm.hdu.edu.cn/showproblem.php?pid=2131

Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 8731 Accepted Submission(s): 4228

Problem Description

Mickey is interested in probability recently. One day , he played a game which is about probability with mini.First mickey gives a letter and a word to mini.Then mini calculate the probability that the letter appears in the word.For example,give you the letter "a" and the word "apple". the probability of this case is 0.20000.

Input

The input contains several test cases. Each test case consists of a letter and a word.The length of the word is no longer than 200.

Output

For each test case, print the probability rounded to five digits after the decimal point.

Sample Input

a apple

c Candy

a banana

Sample Output

0.20000

0.50000

注：

此题是java水题，注意要int与double进行转换。

import java.math.BigDecimal;
import java.util.Scanner;

import javax.swing.plaf.basic.BasicArrowButton;

public class Main {

    public static void main(String[] args) {
        Scanner inScanner = new Scanner(System.in);
        while(inScanner.hasNext()) {
            String string = inScanner.next();
            String string2 = inScanner.next();
            string = string.toLowerCase();
            string2 = string2.toLowerCase();
            char c = string.charAt(0);
            int number = 0;
            BigDecimal bigDecimal = BigDecimal.valueOf(0);
            for(int i = 0;i) {
                if(string2.charAt(i) == c) {
                    number ++;
                }
            }
            double number1 = number/1.0;  //int和double的转换。
            double d = number1/string2.length();
            bigDecimal = bigDecimal.add(BigDecimal.valueOf(d).setScale(5,BigDecimal.ROUND_HALF_UP)); //保留5位小数。
            System.out.println(bigDecimal);
        }
    }

}

（JAVA保留小数问题，基础）Probability hdu2131

标签：hal font win alc nsca app limit nta blank

原文地址：https://www.cnblogs.com/Weixu-Liu/p/9648221.html

上一篇：软件工程：java实现wordcount基本功能

下一篇：Centos7安装python3并与python2共存

文章来自：搜素材网的编程语言模块，转载请注明文章出处。
文章标题：（JAVA保留小数问题，基础）Probability hdu2131
文章链接：http://soscw.com/index.php/essay/99094.html

亲，登录后才可以留言！

（JAVA保留小数问题，基础）Probability hdu2131

Probability

评论

热门文章

推荐文章

最新文章

置顶文章