Coding-Problems/HackerRank/Algorithms/Medium/M0007.cpp at master · Mohammed-Shoaib/Coding-Problems · GitHub

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/*
Problem Statement: https://www.hackerrank.com/challenges/the-time-in-words/problem
*/

#include <iostream>
#include <string>
#include <vector>

using namespace std;

string timeInWords(int h, int m) {
	vector<string> ones = {"", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
	vector<string> teens = {"ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"};
	string tens = "twenty";
	string time, hour;
	int n = (m<30) ? m : 60-m;
	if(m == 15 || m == 45)
		time += "quarter";
	else if(m == 30)
		time += "half";
	else{
		if(n > 0 && n < 10)
			time += ones[n];
		else if(n < 20)
			time += teens[n-10];
		else
			time += tens + " " + ones[n%10];
		time += " minute";
		time += (m == 1) ? "" : "s";
	}
	if(m <= 30){
		time += " past ";
		n = h;
	}else{
		time += " to ";
		n = h+1;
	}
	n = (n <= 12) ? n : n-12;
	if(n == 0)
		hour = teens[2];
	else if(n > 0 && n < 10)
		hour = ones[n];
	else
		hour = teens[n-10];
	if(m == 0)
		time = hour + " o' clock";
	else
		time += hour;
	return time;
}

int main()
{
	int h, m;
	cin>>h>>m;
	cout<<timeInWords(h, m);
	return 0;
}