Hackerrank – Popis problému
Celý popis zadania sa nacháza – Hackerrank.
Riešenie
Pre detailnejšie informácie pozri implementáciu.
Urobil som základné prevody čísel do slov.
Potom pre zadané číslo som robil, koľkokát sa nachádza jednotlivý násobok základných prevodov.
Napr. 12 324. obsahuje 12 x 1000 teda „twelve thousand“. Zvyšná časť je očistená o 12 000 je 324. tá obsahuje 3 x 100, teda „three hundred“ a 24 „twenty four“. Spoločne „twelve thousand three hundred twenty four“
Vytvoril som riešenie v týchto programovacích jazykoch:
Všetky riešenia sú dostupné aj na mojom GitHub profile.
Java
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import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Scanner; public class NumberToWords { private static final String ZERO = "Zero"; private static final String ONE = "One"; private static final String TWO = "Two"; private static final String THREE = "Three"; private static final String FOUR = "Four"; private static final String FIVE = "Five"; private static final String SIX = "Six"; private static final String SEVEN = "Seven"; private static final String EIGHT = "Eight"; private static final String NINE = "Nine"; private static final String TEN = "Ten"; private static final String ELEVEN = "Eleven"; private static final String TWELVE = "Twelve"; private static final String THIRTEEN = "Thirteen"; private static final String FOURTEEN = "Fourteen"; private static final String FIFTEEN = "Fifteen"; private static final String SIXTEEN = "Sixteen"; private static final String SEVENTEEN = "Seventeen"; private static final String EIGHTEEN = "Eighteen"; private static final String NINETEEN = "Nineteen"; private static final String TWENTY = "Twenty"; private static final String THIRTY = "Thirty"; private static final String FORTY = "Forty"; private static final String FIFTY = "Fifty"; private static final String SIXTY = "Sixty"; private static final String SEVENTY = "Seventy"; private static final String EIGHTY = "Eighty"; private static final String NINETY = "Ninety"; private static final String HUNDRED = "Hundred"; private static final String THOUSAND = "Thousand"; private static final String MILLION = "Million"; private static final String BILLION = "Billion"; private static final String TRILLION = "Trillion"; private static final Map<Long, String> NUMBER_WORDS = new HashMap<>(); static { NUMBER_WORDS.put(0L, ZERO); NUMBER_WORDS.put(1L, ONE); NUMBER_WORDS.put(2L, TWO); NUMBER_WORDS.put(3L, THREE); NUMBER_WORDS.put(4L, FOUR); NUMBER_WORDS.put(5L, FIVE); NUMBER_WORDS.put(6L, SIX); NUMBER_WORDS.put(7L, SEVEN); NUMBER_WORDS.put(8L, EIGHT); NUMBER_WORDS.put(9L, NINE); NUMBER_WORDS.put(10L, TEN); NUMBER_WORDS.put(11L, ELEVEN); NUMBER_WORDS.put(12L, TWELVE); NUMBER_WORDS.put(13L, THIRTEEN); NUMBER_WORDS.put(14L, FOURTEEN); NUMBER_WORDS.put(15L, FIFTEEN); NUMBER_WORDS.put(16L, SIXTEEN); NUMBER_WORDS.put(17L, SEVENTEEN); NUMBER_WORDS.put(18L, EIGHTEEN); NUMBER_WORDS.put(19L, NINETEEN); NUMBER_WORDS.put(20L, TWENTY); NUMBER_WORDS.put(30L, THIRTY); NUMBER_WORDS.put(40L, FORTY); NUMBER_WORDS.put(50L, FIFTY); NUMBER_WORDS.put(60L, SIXTY); NUMBER_WORDS.put(70L, SEVENTY); NUMBER_WORDS.put(80L, EIGHTY); NUMBER_WORDS.put(90L, NINETY); NUMBER_WORDS.put(100L, HUNDRED); NUMBER_WORDS.put(1_000L, THOUSAND); NUMBER_WORDS.put(1_000_000L, MILLION); NUMBER_WORDS.put(1_000_000_000L, BILLION); NUMBER_WORDS.put(1_000_000_000_000L, TRILLION); } public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int tests = Integer.parseInt(scanner.nextLine()); for (int i = 0; i < tests; i++) { long l = Long.parseLong(scanner.nextLine()); List<Integer> numbers = new ArrayList<>(); int divisor = 10; while (l > 0) { int remainder = (int) (l % divisor); numbers.add(remainder); l /= divisor; } StringBuilder result = new StringBuilder(); if (numbers.size() == 0) { result.append(ZERO); } for (int index = 0; index < numbers.size();) { long power = (long) Math.pow(10, index); if (power >= 1_000_000_000_000L) { long number = numbers.get(index++); if (number > 0) { StringBuilder temp = new StringBuilder(); String wordNumber = NUMBER_WORDS.get(number); temp.append(wordNumber); temp.append(" "); String wordPower = NUMBER_WORDS.get(power); temp.append(wordPower); temp.append(" "); result.insert(0, temp); } } else if (power >= 1_000_000_000) { long number1 = 0; long number2 = 0; long number3 = 0; if (index < numbers.size()) { number3 = numbers.get(index++); } if (index < numbers.size()) { number2 = numbers.get(index++); } if (index < numbers.size()) { number1 = numbers.get(index++); } if (number1 > 0 || number2 > 0 || number3 > 0) { StringBuilder temp = new StringBuilder(); if (number1 > 0) { String wordNumber = NUMBER_WORDS.get(number1); temp.append(wordNumber); temp.append(" "); temp.append(HUNDRED); temp.append(" "); } if (number2 > 1) { number2 *= 10; String wordNumber = NUMBER_WORDS.get(number2); temp.append(wordNumber); temp.append(" "); if (number3 > 0) { wordNumber = NUMBER_WORDS.get(number3); temp.append(wordNumber); temp.append(" "); } } else { String concat = String.valueOf(number2) + String.valueOf(number3); long n = Long.parseLong(concat); String wordNumber = NUMBER_WORDS.get(n); temp.append(wordNumber); temp.append(" "); } String billion = NUMBER_WORDS.get(1_000_000_000L); temp.append(billion); temp.append(" "); result.insert(0, temp); } } else if (power >= 1_000_000) { long number1 = 0; long number2 = 0; long number3 = 0; if (index < numbers.size()) { number3 = numbers.get(index++); } if (index < numbers.size()) { number2 = numbers.get(index++); } if (index < numbers.size()) { number1 = numbers.get(index++); } if (number1 > 0 || number2 > 0 || number3 > 0) { StringBuilder temp = new StringBuilder(); if (number1 > 0) { String wordNumber = NUMBER_WORDS.get(number1); temp.append(wordNumber); temp.append(" "); temp.append(HUNDRED); temp.append(" "); } if (number2 > 1) { number2 *= 10; String wordNumber = NUMBER_WORDS.get(number2); temp.append(wordNumber); temp.append(" "); if (number3 > 0) { wordNumber = NUMBER_WORDS.get(number3); temp.append(wordNumber); temp.append(" "); } } else { String concat = String.valueOf(number2) + String.valueOf(number3); long n = Long.parseLong(concat); String wordNumber = NUMBER_WORDS.get(n); temp.append(wordNumber); temp.append(" "); } String million = NUMBER_WORDS.get(1_000_000L); temp.append(million); temp.append(" "); result.insert(0, temp); } } else if (power >= 1_000) { long number1 = 0; long number2 = 0; long number3 = 0; if (index < numbers.size()) { number3 = numbers.get(index++); } if (index < numbers.size()) { number2 = numbers.get(index++); } if (index < numbers.size()) { number1 = numbers.get(index++); } if (number1 > 0 || number2 > 0 || number3 > 0) { StringBuilder temp = new StringBuilder(); if (number1 > 0) { String wordNumber = NUMBER_WORDS.get(number1); temp.append(wordNumber); temp.append(" "); temp.append(HUNDRED); temp.append(" "); } if (number2 > 1) { number2 *= 10; String wordNumber = NUMBER_WORDS.get(number2); temp.append(wordNumber); temp.append(" "); if (number3 > 0) { wordNumber = NUMBER_WORDS.get(number3); temp.append(wordNumber); temp.append(" "); } } else { String concat = String.valueOf(number2) + String.valueOf(number3); long n = Long.parseLong(concat); String wordNumber = NUMBER_WORDS.get(n); temp.append(wordNumber); temp.append(" "); } String thousand = NUMBER_WORDS.get(1_000L); temp.append(thousand); temp.append(" "); result.insert(0, temp); } } else { long number1 = 0; long number2 = 0; long number3 = 0; if (index < numbers.size()) { number3 = numbers.get(index++); } if (index < numbers.size()) { number2 = numbers.get(index++); } if (index < numbers.size()) { number1 = numbers.get(index++); } if (number1 > 0 || number2 > 0 || number3 > 0) { StringBuilder temp = new StringBuilder(); if (number1 > 0) { String wordNumber = NUMBER_WORDS.get(number1); temp.append(wordNumber); temp.append(" "); temp.append(HUNDRED); temp.append(" "); } if (number2 > 1) { number2 *= 10; String wordNumber = NUMBER_WORDS.get(number2); temp.append(wordNumber); temp.append(" "); if (number3 > 0) { wordNumber = NUMBER_WORDS.get(number3); temp.append(wordNumber); temp.append(" "); } } else { String concat = String.valueOf(number2) + String.valueOf(number3); long n = Long.parseLong(concat); if (n > 0) { String wordNumber = NUMBER_WORDS.get(n); temp.append(wordNumber); temp.append(" "); } } result.insert(0, temp); } } } System.out.println(result.toString().trim()); } scanner.close(); } } |