In Java Please (Don't copy other answers),Please help

Currency Exchange

Programming challenge description:

Given

• A list of foreign exchange rates
• A selected curreny
• A target currency

Your goal is to calculate the max amount of the target currency to 1 unit of the selected currency through the FX transactions. Assume all transations are free and done immediately. If you cannot finish the exchange, return -1.0.

Input:

You will be provided a list of fx rates, a selected currency, and a target currency.

For example:

FX rates list: USD to JPY 1 to 109 USD to GBP 1 to 0.71 GBP to JPY 1 to 155 Original currency: USD Target currency : JPY 

Output:

Calculated the max target currency will can get.

For example:

USD to JPY -> 109 USD to GBP to JPY = 0.71 * 155 = 110.05 > 109, 

so the max value will be 110.05

Test 1

Test InputDownload Test 1 Input

USD,CAD,1.3;USD,GBP,0.71;USD,JPY,109;GBP,JPY,155 USD JPY

Expected OutputDownload Test 1 Input

110.05

Test 2

Test InputDownload Test 2 Input

USD,GBP,0.7;USD,JPY,109;GBP,JPY,155;CAD,CNY,5.27;CAD,KRW,921 USD CNY

Expected OutputDownload Test 2 Input

-1.0

Given code in Java:

import java.nio.charset.StandardCharsets;

/** * The Main class implements an application that reads lines from the standard input * and prints them to the standard output. */ public class Main { /** * Iterate through each line of input. */ public static void main(String[] args) throws IOException { InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8); BufferedReader in = new BufferedReader(reader); String line; while ((line = in.readLine()) != null) { System.out.println(line); } } }