Question

Please solve in c++

Split the Number

Programming challenge description:

You are given a number N and a pattern. The pattern consists of lowercase latin letters and one operation "+" or "-". The challenge is to split the number and evaluate it according to this pattern e.g.
1232 ab+cd -> a:1, b:2, c:3, d:2 -> 12+32 -> 44

Input:

Your program should read lines from standard input. Each line contains the number and the pattern separated by a single whitespace. The number will be in range [100, 1000000000]. All test cases contain valid expressions (no leading zeros).

Output:

Print out the result of the pattern evaluation.

Test 1

Test InputDownload Test 1 Input

3413289830 a-bcdefghij

Expected OutputDownload Test 1 Input

-413289827

Test 2

Test InputDownload Test 2 Input

776 a+bc

Expected OutputDownload Test 2 Input

83

Answer 1

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

public class SplittheNumber {

@SuppressWarnings("resource")

public static void main(String[] args) throws IOException {

File file = new File("files/easy/test_SplittheNumber.txt");

BufferedReader buffer = new BufferedReader(new FileReader(file));

String line;

while ((line = buffer.readLine()) != null) {

line = line.trim();

String[] words = line.split(" ");

long result = 0;

if (words[1].contains("+")) {

String[] splitted = words[1].split("\\+");

result = Long.parseLong(words[0].substring(0, splitted[0].length()))

+ Long.parseLong(words[0].substring(splitted[0].length()));

} else if (words[1].contains("-")) {

String[] splitted = words[1].split("-");

result = Long.parseLong(words[0].substring(0, splitted[0].length()))

- Long.parseLong(words[0].substring(splitted[0].length()));

}

System.out.println(result);

}

}

}