Hackerrank - Solve me first & second

This is a summary post of first Hackerrank intruductory challenges – Solve me first, Solve me second. It is only required to select your favourite programming language. You get a template and just submit this code.

Both solutions:

Solve me first
Solve me second

Also available on my GitHub here and here.

Solve me first

Scala

object SolveMeFirst {
  def main(args: Array[String]) {
    println(io.Source.stdin.getLines().take(2).map(_.toInt).sum)
  }
}

object SolveMeFirst {

def main(args: Array[String]) {

println(io.Source.stdin.getLines().take(2).map(_.toInt).sum)

}

Java

import java.util.*;

public class SolveMeFirst {
    static int solveMeFirst(int a, int b) {
        return a+b;
    }
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a;
        a = in.nextInt();
        int b;
        b = in.nextInt();
        int sum;
        sum = solveMeFirst(a, b);
        System.out.println(sum);
    }
}

import java.util.*;

public class SolveMeFirst {

static int solveMeFirst(int a, int b) {

return a+b;

}

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int a;

a = in.nextInt();

int b;

b = in.nextInt();

int sum;

sum = solveMeFirst(a, b);

System.out.println(sum);

}

Javascript

process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

function solveMeFirst(a, b) {
    return a+b;
}

function main() {
    // write your code here.
    // call `readLine()` to read a line.
    // use console.log() to write to stdout

    var a = parseInt(readLine());
    var b = parseInt(readLine());;

    var res = solveMeFirst(a, b);
    console.log(res);
}

process.stdin.resume();

process.stdin.setEncoding('ascii');

var input_stdin = "";

var input_stdin_array = "";

var input_currentline = 0;

process.stdin.on('data', function (data) {

input_stdin += data;

});

process.stdin.on('end', function () {

input_stdin_array = input_stdin.split("\n");

main();

});

function readLine() {

return input_stdin_array[input_currentline++];

}

/////////////// ignore above this line ////////////////////

function solveMeFirst(a, b) {

return a+b;

}

function main() {

// write your code here.

// call `readLine()` to read a line.

// use console.log() to write to stdout

var a = parseInt(readLine());

var b = parseInt(readLine());;

var res = solveMeFirst(a, b);

console.log(res);

}

Ruby

def solveMeFirst (a, b)
    return a+b
end

val1 = gets.to_i
val2 = gets.to_i
sum = solveMeFirst(val1,val2)
print (sum)

def solveMeFirst (a, b)

return a+b

end

val1 = gets.to_i

val2 = gets.to_i

sum = solveMeFirst(val1,val2)

print (sum)

Solve me second

Scala

object SolveMeSecond extends App {
  val n = readInt
  //recommended
  (1 to n).map(i => readLine.split(" ").map(_.toInt).sum).foreach(println)

  /*
    another way
    for (i <- 1 to n) {
    val Array(a, b) = readLine.split(" ").map(_.toInt)
    println(a + b)
  }
  */
}

object SolveMeSecond extends App {

val n = readInt

//recommended

(1 to n).map(i => readLine.split(" ").map(_.toInt).sum).foreach(println)

another way

for (i <- 1 to n) {

val Array(a, b) = readLine.split(" ").map(_.toInt)

println(a + b)

}

Java

import java.util.*;

class SolveMeSecond {

    static int solveMeSecond(int a, int b) {
        return a+b;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int t;
        int sum;
        int a,b;
        t = in.nextInt();
        for (int i=0;i<t;i++) {
            a = in.nextInt();
            b = in.nextInt();
            sum = solveMeSecond(a, b);
            System.out.println(sum);
        }
    }
}

import java.util.*;

class SolveMeSecond {

static int solveMeSecond(int a, int b) {

return a+b;

}

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int t;

int sum;

int a,b;

t = in.nextInt();

for (int i=0;i<t;i++) {

a = in.nextInt();

b = in.nextInt();

sum = solveMeSecond(a, b);

System.out.println(sum);

}

Javascript

process.stdin.resume();
process.stdin.setEncoding('ascii');

var __input_stdin = "";
var __input_stdin_array = "";
var __input_currentline = 0;

process.stdin.on('data', function (data) {
    __input_stdin += data;
});

process.stdin.on('end', function () {
    __input_stdin_array = __input_stdin.split("\n");
    var res;
    var n = parseInt(__input_stdin_array[__input_currentline].trim(), 10);
    __input_currentline += 1;
    for (var i = 0; i<n;i++) {
       var _line = __input_stdin_array[__input_currentline].trim();
       __input_currentline += 1;
        var line = _line.split(" ");
        var _a = parseInt(line[0]);
        var _b = parseInt(line[1]);
       res = _a + _b;
       process.stdout.write(""+res+"\n");
    }
});

process.stdin.resume();

process.stdin.setEncoding('ascii');

var __input_stdin = "";

var __input_stdin_array = "";

var __input_currentline = 0;

process.stdin.on('data', function (data) {

__input_stdin += data;

});

process.stdin.on('end', function () {

__input_stdin_array = __input_stdin.split("\n");

var res;

var n = parseInt(__input_stdin_array[__input_currentline].trim(), 10);

__input_currentline += 1;

for (var i = 0; i<n;i++) {

var _line = __input_stdin_array[__input_currentline].trim();

__input_currentline += 1;

var line = _line.split(" ");

var _a = parseInt(line[0]);

var _b = parseInt(line[1]);

res = _a + _b;

process.stdout.write(""+res+"\n");

}

});

Ruby

def solveMeSecond (a, b)
    return a+b
end
t = gets.to_i
(0...t).each do |i|
    lis = gets.strip.split(" ")
    a = lis[0].to_i
    b = lis[1].to_i
    res = solveMeSecond(a,b)
    puts res
end

def solveMeSecond (a, b)

return a+b

end

t = gets.to_i

(0...t).each do |i|

lis = gets.strip.split(" ")

a = lis[0].to_i

b = lis[1].to_i

res = solveMeSecond(a,b)

puts res

end

Pavol Pidanič

I can count to 1023 with 10 fingers

Hackerrank – Solve me first & second

Solve me first

Solve me second