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  1. /**
  2.  * Binary Addition
  3.  * 
  4.  * Description
  5.  * Write a program that, given two binary numbers represented as strings, prints
  6.  * their sum in binary. The binary strings are comma separated, two per line. The
  7.  * final answer should not have any leading zeroes. In case the answer is zero,
  8.  * just print one zero i.e. 0
  9.  * 
  10.  * Input
  11.  * Your program should read lines from standard input. Each line contains two binary
  12.  * strings, separated by a comma and no spaces.
  13.  * 
  14.  * Output
  15.  * For each pair of binary numbers print to standard output their binary sum, one
  16.  * per line.
  17.  * 
  18.  * Example
  19.  * 110011,1010 => 111101
  20.  * 11010,00101001 => 1000011
  21.  * 
  22.  * Copyright © 2012-2021 HireVue
  23.  * 
  24.  */
  25. import java.io.BufferedReader;
  26. import java.io.IOException;
  27. import java.io.InputStreamReader;
  28. import java.util.stream.Stream;
  29. import java.nio.charset.StandardCharsets;
  30.  
  31. public class Main {
  32.   /**
  33.    * Iterate through each line of input.
  34.    */
  35.   public static void main(String[] args) throws IOException {
  36.     InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
  37.     BufferedReader in = new BufferedReader(reader);
  38.     String line;
  39.     while ((line = in.readLine()) != null) {
  40.       try {
  41.         // String[] inputs = line.split(",");
  42.         // int lvalue = Integer.valueOf(inputs[0], 2);
  43.         // int rvalue = Integer.valueOf(inputs[1], 2); 
  44.         // System.out.println(Integer.toBinaryString(lvalue+rvalue));
  45.  
  46.         System.out.println(Integer.toBinaryString(Stream
  47.         	.of(line.split(","))
  48.         	.mapToInt(str -> Integer.valueOf(str, 2))
  49.         	.sum()));
  50.       } catch (IndexOutOfBoundsException | NumberFormatException e) {
  51.         e.printStackTrace(System.err);
  52.         continue;
  53.       }
  54.     }
  55.   }
  56. }
Success #stdin #stdout 0.08s 34296KB
comments (?)
stdin 
110011,1010
11010,00101001
stdout 
111101
1000011
https://ideone.com/b2jCgL
Binary_Addition
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
secret

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