The Time in Words – HackerRank Solution

In this post, we will solve The Time in Words HackerRank Solution. This problem (The Time in Words) is a part of HackerRank Problem Solving series.

Task

Given the time in numerals we may convert it into words, as shown below:

5:00 -> five o’ clock
5:01 -> one minute past five
5:10 -> ten minute past five
5:15 -> quarter past five
5:30 -> half past five
5:40 -> twenty minutes to six
5:45 -> quarter to six
5:47 -> thirteen minutes to six
5:28 -> twenty eight minutes past five

At minutes = 0, use o’ clock. For 1 <= minutes <= 30, use past, and for 30 < minutes use to. Note the space between the apostrophe and clock in o’ clock. Write a program which prints the time in words for the input given in the format described.

Function Description

Complete the timeInWords function in the editor below.

timeInWords has the following parameter(s):

• int h: the hour of the day
• int m: the minutes after the hour

Returns

• string: a time string as described

Input Format

The first line contains h, the hours portion The second line contains m, the minutes portion

Constraints

• 1 <= h <= 12
• 0 <= m < 60

Sample Input 0

5
47

Sample Output 0

thirteen minutes to six

Sample Input 1

3
00

Sample Output 1

three o' clock

Sample Input 2

7
15

Sample Output 2

quarter past seven

Solution – The Time in Words – HackerRank Solution

C++

#include <iostream>
using namespace std;

string s[21] = {"",        "one",     "two",       "three",    "four",
                "five",    "six",     "seven",     "eight",    "nine",
                "ten",     "eleven",  "twelve",    "thirteen", "fourteen",
                "fifteen", "sixteen", "seventeen", "eighteen", "nineteen",
                "twenty"};

int main() {
  int h, m;
  cin >> h >> m;
  if (m == 0) {
    cout << s[h] << " o' clock" << endl;
  } else if (m < 15) {
    cout << s[m] << " minute" << (m == 1 ? "" : "s") << " past " << s[h]
         << endl;
  } else if (m == 15) {
    cout << "quarter past " << s[h] << endl;
  } else if (m <= 20) {
    cout << s[m] << " minutes past " << s[h] << endl;
  } else if (m < 30) {
    cout << "twenty " << s[m - 20] << " minutes past " << s[h] << endl;
  } else if (m == 30) {
    cout << "half past " << s[h] << endl;
  } else if (m < 40) {
    cout << "twenty " << s[40 - m] << " minutes to " << s[h + 1] << endl;
  } else if (m < 45) {
    cout << s[60 - m] << " minutes to " << s[h + 1] << endl;
  } else if (m == 45) {
    cout << "quarter to " << s[h + 1] << endl;
  } else {
    cout << s[60 - m] << " minute" << (m == 59 ? "" : "s") << " to " << s[h + 1]
         << endl;
  }
  return 0;
}

Python

import sys


def timeInWords(h, m):
    res = ''
    numbers = ['','one','two','three','four','five','six','seven','eight','nine','ten','eleven','twelve', 'thirteen','fourteen','fifteen','sixteen','seventeen','eighteen','nineteen','twenty']
    minute = 'minute'
    
    if m != 1:
        minute += 's'
        
    if m == 0:
        res = numbers[h] + " o' clock"
    elif m == 30:
        res = "half past " + numbers[h]
    elif m == 15:
        res = "quarter past " + numbers[h]
    elif m == 45:
        res = "quarter to " + numbers[h + 1]
    elif m < 20:
        res = numbers[m] + ' ' + minute + ' past ' + numbers[h]
    elif m < 30:
        res = numbers[-1] + ' ' + numbers[int(m%10)] + ' ' + minute + ' past ' + numbers[h]
    elif m > 45:
        res = numbers[60 - m] + ' ' + minute + ' to ' + numbers[h + 1]
    elif m > 30:
        res = numbers[-1] + ' ' + numbers[int(m%10)] + ' ' + minute + ' to ' + numbers[h + 1]
    
    return res.replace('  ', ' ')

if __name__ == "__main__":
    h = int(input().strip())
    m = int(input().strip())
    result = timeInWords(h, m)
    print(result)

Java

import java.util.Scanner;

public class Solution {

  public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    int h = in .nextInt();
    int m = in .nextInt();
    String word[] = {
      "",
      "one",
      "two",
      "three",
      "four",
      "five",
      "six",
      "seven",
      "eight",
      "nine",
      "ten",
      "eleven",
      "twelve",
      "thirteen",
      "fourteen",
      "fifteen",
      "sixteen",
      "seventeen",
      "eighteen",
      "nineteen",
      "twenty",
      "twenty one",
      "twenty two",
      "twenty three",
      "twenty four",
      "twenty five",
      "twenty six",
      "twenty seven",
      "twenty eight",
      "twenty nine"
    };
    String time = "";

    if (m == 0) {
      time = word[h] + " o' clock";
    } else if (m == 15) {
      time = "quarter past " + word[h];
    } else if (m == 30) {
      time = "half past " + word[h];
    } else if (m == 45) {
      time = "quarter to " + word[h + 1];
    } else if (m == 1) {
      time = word[m] + " minute past " + word[h];
    } else if (m < 30) {
      time = word[m] + " minutes past " + word[h];
    } else {
      time = word[60 - m] + " minutes to " + word[h + 1];
    }
    System.out.println(time);
  }
}

Note: This problem (The Time in Words) is generated by HackerRank but the solution is provided by CodingBroz. This tutorial is only for Educational and Learning purpose.