HackerRank之Java Currency Formatter

心已赠人 2022-04-02 02:46 248阅读 0赞

Given a [double-precision][] number, payment, denoting an amount of money, use the [NumberFormat][] class' [getCurrencyInstance][] method to convert payment into the US, Indian, Chinese, and French currency formats. Then print the formatted values as follows:

US: formattedPayment

India: formattedPayment

China: formattedPayment

France: formattedPayment

where formattedPayment  is payment formatted according to the appropriate [Locale][]'s currency.

**Note:** India does not have a built-in Locale, so you must [construct one][] where the language is `en` (i.e., English).

**Input Format**

A single double-precision number denoting .

**Output Format**

On the first line, print `US: u` where  is  formatted for US currency.   
On the second line, print `India: i` where  is  formatted for Indian currency.   
On the third line, print `China: c` where  is  formatted for Chinese currency.   
On the fourth line, print `France: f`, where  is  formatted for French currency.

Answer

import java.io.*;
    import java.util.*;
    import java.text.*;
    import java.math.*;
    import java.util.regex.*;
    
    public class Solution {
        
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            double payment = scanner.nextDouble();
            scanner.close();
    
            // Write your code here.
            Locale local = new Locale("en","IN");
            NumberFormat nf1=NumberFormat.getCurrencyInstance(Locale.US);
            NumberFormat nf2=NumberFormat.getCurrencyInstance(Locale.CHINA);
            NumberFormat nf3=NumberFormat.getCurrencyInstance(Locale.FRANCE);
            NumberFormat nf4=NumberFormat.getCurrencyInstance(local);
            String us=nf1.format(payment);
            String china=nf2.format(payment);
            String france=nf3.format(payment);
            String india=nf4.format(payment);
    
            System.out.println("US: " + us);
            System.out.println("India: " + india);
            System.out.println("China: " + china);
            System.out.println("France: " + france);
        }
    }

[double-precision]: https://en.wikipedia.org/wiki/Double-precision_floating-point_format
[NumberFormat]: https://docs.oracle.com/javase/8/docs/api/java/text/NumberFormat.html
[getCurrencyInstance]: https://docs.oracle.com/javase/8/docs/api/java/text/NumberFormat.html#getCurrencyInstance-java.util.Locale-
[Locale]: https://docs.oracle.com/javase/8/docs/api/java/util/Locale.html
[construct one]: https://docs.oracle.com/javase/8/docs/api/java/util/Locale.html#Locale-java.lang.String-java.lang.String-