Archives scala - Stránka 2 z 15

Hackerrank – Electronics Shop

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Urobím to, čo je napísané v zadaní. Hľadám také dvojice klávesnice a usb, ktoré sa najviac približujú požadovanej cene zľava. Vytvoril som riešenie v týchto programovacích jazykoch: Scala Java Javascript Všetky riešenia sú dostupné aj na mojom GitHub profile. Scala

import scala.io.Source

object Solution extends App {
    val lines = Source.stdin.getLines().toList
    val (s, n, m) = lines.head.split(" ").map(_.toInt).toList match {
    case a :: b :: c :: Nil => (a, b, c)
    }
    val keyboards = lines(1).split(" ").map(_.toInt)
    val usbs = lines(2).split(" ").map(_.toInt)

    val allSmallerThanS = (for {
    i <- 0 until n
    j <- 0 until m
    } yield (i, j)).toList.filter {
    a => keyboards(a._1) + usbs(a._2) <= s
    }

    val sum = if(allSmallerThanS.isEmpty) {
    -1
    } else {
    val indexes = allSmallerThanS.maxBy {
        a => keyboards(a._1) + usbs(a._2)
    }
    keyboards(indexes._1) + usbs(indexes._2)
    }
    println(sum)
}

import scala.io.Source

object Solution extends App {

val lines = Source.stdin.getLines().toList

val (s, n, m) = lines.head.split(" ").map(_.toInt).toList match {

case a :: b :: c :: Nil => (a, b, c)

}

val keyboards = lines(1).split(" ").map(_.toInt)

val usbs = lines(2).split(" ").map(_.toInt)

val allSmallerThanS = (for {

i <- 0 until n

j <- 0 until m

} yield (i, j)).toList.filter {

a => keyboards(a._1) + usbs(a._2) <= s

}

val sum = if(allSmallerThanS.isEmpty) {

-1

} else {

val indexes = allSmallerThanS.maxBy {

a => keyboards(a._1) + usbs(a._2)

}

keyboards(indexes._1) + usbs(indexes._2)

}

println(sum)

}

Java

import java.util.*;

public class Solution {

    public static void main(String[] args) {
        Scanner stdin = new Scanner(System.in);
        int amount = stdin.nextInt();
        int keyboardCount = stdin.nextInt();
        int usbCount = stdin.nextInt();
        int[] keyboards = new int[keyboardCount];
        int[] usbs = new int[usbCount];
        for(int i = 0; i < keyboardCount; i++) {
            keyboards[i] = stdin.nextInt();
        }
        for(int i = 0; i < usbCount; i++) {
            usbs[i] = stdin.nextInt();
        }

        int spentAmount = -1;
        for(int i = 0; i < keyboardCount; i++) {
            for(int j = 0; j < usbCount; j++) {
                int sum = keyboards[i] + usbs[j];
                if(sum <= amount && sum > spentAmount) {
                    spentAmount = sum;
                }
            }
        }
        System.out.println(spentAmount);
        stdin.close();
    }
}

import java.util.*;

public class Solution {

public static void main(String[] args) {

Scanner stdin = new Scanner(System.in);

int amount = stdin.nextInt();

int keyboardCount = stdin.nextInt();

int usbCount = stdin.nextInt();

int[] keyboards = new int[keyboardCount];

int[] usbs = new int[usbCount];

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

keyboards[i] = stdin.nextInt();

}

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

usbs[i] = stdin.nextInt();

}

int spentAmount = -1;

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

for(int j = 0; j < usbCount; j++) {

int sum = keyboards[i] + usbs[j];

if(sum <= amount && sum > spentAmount) {

spentAmount = sum;

}

System.out.println(spentAmount);

stdin.close();

}

[…]

Hackerrank – Day of the Programmer

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Pozrieť implementáciu. Postup je daný v zadaní Vytvoril som riešenie v týchto programovacích jazykoch: Scala Java Javascript Všetky riešenia sú dostupné aj na mojom GitHub profile. Scala

object solution extends App {
    val sc = new java.util.Scanner (System.in)
    
    val year = sc.nextInt
    val output = if (year == 1918)
        "26.09.1918"
    else if (((year <= 1917) && (year%4 == 0)) || ((year%400 == 0) || ((year%4 ==0) & (year%100 != 0))))
        "12.09." + year
    else
        "13.09." + year
    
    println(output)
}

object solution extends App {

val sc = new java.util.Scanner (System.in)

val year = sc.nextInt

val output = if (year == 1918)

"26.09.1918"

else if (((year <= 1917) && (year%4 == 0)) || ((year%400 == 0) || ((year%4 ==0) & (year%100 != 0))))

"12.09." + year

else

"13.09." + year

println(output)

}

Java

import java.util.*;

public class Solution {

    static String solve(int year) {
        if (year == 1918)
            return "26.09.1918";
        else if (((year <= 1917) && (year%4 == 0)) || ((year%400 == 0) || ((year%4 ==0) & (year%100 != 0))))
            return "12.09." + year;
        else
            return "13.09." + year;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int year = in.nextInt();
        String result = solve(year);
        System.out.println(result);
    }
}

import java.util.*;

public class Solution {

static String solve(int year) {

if (year == 1918)

return "26.09.1918";

else if (((year <= 1917) && (year%4 == 0)) || ((year%400 == 0) || ((year%4 ==0) & (year%100 != 0))))

return "12.09." + year;

else

return "13.09." + year;

}

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int year = in.nextInt();

String result = solve(year);

System.out.println(result);

}

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 solve(year){
    if (year == 1918)
        return "26.09.1918";
    else if (((year <= 1917) && (year%4 == 0)) || ((year%400 == 0) || ((year%4 ==0) & (year%100 != 0))))
        return "12.09." + year;
    else
        return "13.09." + year;
}

function main() {
    var year = parseInt(readLine());
    var result = solve(year);
    process.stdout.write(""+result+"\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");

main();

});

function readLine() {

return input_stdin_array[input_currentline++];

}

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

function solve(year){

if (year == 1918)

return "26.09.1918";

else if (((year <= 1917) && (year%4 == 0)) || ((year%400 == 0) || ((year%4 ==0) & (year%100 != 0))))

return "12.09." + year;

else

return "13.09." + year;

}

function main() {

var year = parseInt(readLine());

var result = solve(year);

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

}

Hackerrank – Drawing Book

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie pre zistenie počtu otočení z predu – počet otočení zo zadu – najprv si zistím, či je párne, ak je potrebujem si určiť stranu na pravej strane knihy a tá je vždy nepárna – musím si urobiť […]

Hackerrank – String Compression

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Pozrieť implementáciu. Postup je daný v zadaní. Vytvoril som riešenie v týchto programovacích jazykoch: Scala Všetky riešenia sú dostupné aj na mojom GitHub profile. Scala

object Solution extends App {
  val line = Source.stdin.getLines().toList.head

  val subs = uniformSubstrings(line)
  val substringCompressed = subs.map(s => {
    val length = s.length
    if(length > 1) {
      s.head.toString + length
    } else {
      s.head.toString
    }
  })

  println(substringCompressed.mkString(""))


  def uniformSubstrings(s: String): List[String] = {
    if(s.length <= 0) {
      return Nil
    }
    val c = s.charAt(0)
    val substring = s.takeWhile(_ == c)
    substring :: uniformSubstrings(s.drop(substring.length))
  }
}

object Solution extends App {

val line = Source.stdin.getLines().toList.head

val subs = uniformSubstrings(line)

val substringCompressed = subs.map(s => {

val length = s.length

if(length > 1) {

s.head.toString + length

} else {

s.head.toString

}

})

println(substringCompressed.mkString(""))

def uniformSubstrings(s: String): List[String] = {

if(s.length <= 0) {

return Nil

}

val c = s.charAt(0)

val substring = s.takeWhile(_ == c)

substring :: uniformSubstrings(s.drop(substring.length))

}

Hackerrank – Missing Numbers (FP)

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Pozri riešenie Missing Numbers.

Hackerrank – ACM ICPC Team

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Urobím všetky možné si dvojice hráčov, že skombinujem každého hráča s každým a zistím koľko tém spoločne ovládajú. Témy sú zadané binárne. Použijem operáciu OR na binárnych číslach – Stačí, ak jeden vie tému a budú vedieť v súťaži. Zistím tímy, ktoré majú […]

Hackerrank – Weighted Uniform Strings

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Nájdem si zoznam všetkých podreťazcov, ktoré obsahujú za sebou idúce znaky. Keď mám ich zoznam, vytvorím si všetky možné váhy podľa zadania. Tzn, že každý podreťazec si rozdelím na n častí, kde n je dĺžka podreťazca. Takto získam všetky možné váhy v celom […]

Hackerrank – Birthday Cake Candles

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Nájdeme si najvyššiu sviečku. Určíme počet takých sviečok. Vytvoril som riešenie v týchto programovacích jazykoch: Scala Java Javascript Všetky riešenia sú dostupné aj na mojom GitHub profile. Scala

object BirthdayCakeCandles {

  def birthdayCakeCandles(n: Int, ar: Array[Int]): Int =  {
    val candleHeightGroups: Map[Int, Seq[Int]] = ar.toList.groupBy(i => i)
    val maxHeight = candleHeightGroups.keys.max
    candleHeightGroups.getOrElse(maxHeight, Seq.empty).size
  }

  def main(args: Array[String]) {
    val sc = new java.util.Scanner (System.in)
    val n = sc.nextInt()
    val ar = new Array[Int](n)
    for(ar_i <- 0 until n) {
      ar(ar_i) = sc.nextInt()
    }
    val result = birthdayCakeCandles(n, ar)
    println(result)
  }
}

object BirthdayCakeCandles {

def birthdayCakeCandles(n: Int, ar: Array[Int]): Int = {

val candleHeightGroups: Map[Int, Seq[Int]] = ar.toList.groupBy(i => i)

val maxHeight = candleHeightGroups.keys.max

candleHeightGroups.getOrElse(maxHeight, Seq.empty).size

}

def main(args: Array[String]) {

val sc = new java.util.Scanner (System.in)

val n = sc.nextInt()

val ar = new Array[Int](n)

for(ar_i <- 0 until n) {

ar(ar_i) = sc.nextInt()

}

val result = birthdayCakeCandles(n, ar)

println(result)

}

Java

import java.util.*;

public class BirthdayCakeCandles {

    static int birthdayCakeCandles(int n, int[] ar) {
        int max = 0;
        for(int i = 0; i < ar.length; i++) {
            if(ar[i] > max) {
                max = ar[i];
            }
        }
        int count = 0;
        for(int i = 0; i < ar.length; i++) {
            if(ar[i] == max) {
                count++;
            }
        }
        return count;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int[] ar = new int[n];
        for(int ar_i = 0; ar_i < n; ar_i++){
            ar[ar_i] = in.nextInt();
        }
        int result = birthdayCakeCandles(n, ar);
        System.out.println(result);
    }
}

import java.util.*;

public class BirthdayCakeCandles {

static int birthdayCakeCandles(int n, int[] ar) {

int max = 0;

for(int i = 0; i < ar.length; i++) {

if(ar[i] > max) {

max = ar[i];

}

int count = 0;

for(int i = 0; i < ar.length; i++) {

if(ar[i] == max) {

count++;

}

return count;

}

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int n = in.nextInt();

int[] ar = new int[n];

for(int ar_i = 0; ar_i < n; ar_i++){

ar[ar_i] = in.nextInt();

}

int result = birthdayCakeCandles(n, ar);

System.out.println(result);

}

Javascript

'use strict';

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 birthdayCakeCandles(n, ar) {
    let max = 0;
    for(let i = 0; i < ar.length; i++) {
        if(ar[i] > max) {
            max = ar[i];
        }
    }
    let count = 0;
    for(let i = 0; i < ar.length; i++) {
        if(ar[i] === max) {
            count++;
        }
    }
    return count;
}

function main() {
    var n = parseInt(readLine());

    const ar = readLine().split(' ').map(i => parseInt(i));
    var result = birthdayCakeCandles(n, ar);
    process.stdout.write("" + result + "\n");

}

'use strict';

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 birthdayCakeCandles(n, ar) {

let max = 0;

for(let i = 0; i < ar.length; i++) {

if(ar[i] > max) {

max = ar[i];

}

let count = 0;

for(let i = 0; i < ar.length; i++) {

if(ar[i] === max) {

count++;

}

return count;

}

function main() {

var n = parseInt(readLine());

const ar = readLine().split(' ').map(i => parseInt(i));

var result = birthdayCakeCandles(n, ar);

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

}

Hackerrank – Taum and B’day

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Ako je napísané v zadaní. Porovnať, či je výhodnejšie kúpiť darčeky v cenách, aké sú zadané, alebo cena za vymenenie farby darčeku. Vytvoril som riešenie v týchto programovacích jazykoch: Scala Java Javascript Všetky riešenia sú dostupné aj na mojom GitHub profile. Scala

object TaumAndBday {

  def main(args: Array[String]) {
    val sc = new java.util.Scanner (System.in)
    val t = sc.nextInt()
    var a0 = 0
    while(a0 < t){
      val black = sc.nextLong()
      val white = sc.nextLong()
      val x = sc.nextLong()
      val y = sc.nextLong()
      val z = sc.nextLong()

      val ansWithoutConvert = black * x + white * y
      val blackConvertCost = black * z
      val ansWhite = (white + black) * y + blackConvertCost

      val whiteConvertCost = white * z
      val ansBlack = (black + white) * x + whiteConvertCost

      var min = ansWithoutConvert
      if(ansBlack.compareTo(min) < 0)
      {
        min = ansBlack
      }
      if(ansWhite.compareTo(min) < 0)
      {
        min = ansWhite
      }
      println(min)
      a0 +=1
    }
  }
}

object TaumAndBday {

def main(args: Array[String]) {

val sc = new java.util.Scanner (System.in)

val t = sc.nextInt()

var a0 = 0

while(a0 < t){

val black = sc.nextLong()

val white = sc.nextLong()

val x = sc.nextLong()

val y = sc.nextLong()

val z = sc.nextLong()

val ansWithoutConvert = black * x + white * y

val blackConvertCost = black * z

val ansWhite = (white + black) * y + blackConvertCost

val whiteConvertCost = white * z

val ansBlack = (black + white) * x + whiteConvertCost

var min = ansWithoutConvert

if(ansBlack.compareTo(min) < 0)

{

min = ansBlack

}

if(ansWhite.compareTo(min) < 0)

{

min = ansWhite

}

println(min)

a0 +=1

}

[…]

Hackerrank – Sequence Equation

Hackerrank – Popis problému Celý popis zadania sa nacháza – Hackerrank. Riešenie Mám zadaný počet čísel n Robím pre všetky čísla od 1 po n Nájdem ich index v prvkoch na druhom riadku Potom nájdem index indexu v prvkoch na druhom riadku Vytvoril som riešenie v týchto programovacích jazykoch: Scala Java Javascript Všetky riešenia sú […]

Pavol Pidanič

Dokážem na 10 prstoch napočítať do 1023

Značka: scala

Hackerrank – Electronics Shop

Hackerrank – Day of the Programmer

Hackerrank – Drawing Book

Hackerrank – String Compression

Hackerrank – Missing Numbers (FP)

Hackerrank – ACM ICPC Team

Hackerrank – Weighted Uniform Strings

Hackerrank – Birthday Cake Candles

Hackerrank – Taum and B’day

Hackerrank – Sequence Equation