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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.text.SimpleDateFormat;
  7.  
  8.  
  9. /* Name of the class has to be "Main" only if the class is public. */
  10. public class Main {
  11.  
  12.     public static void main(String[] args) throws Exception {
  13.         Booking[] bookings = {
  14.                 new Booking(new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-12"),new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-18") ),
  15.                 new Booking(new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-11"),new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-15") ),
  16.                 new Booking(new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-13"),new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-14") ),
  17.                 new Booking(new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-12"),new SimpleDateFormat("yyyy-M-d", Locale.ENGLISH).parse("2016-10-13") ),
  18.         };
  19.  
  20.         System.out.println(getDaysBetweenDates(bookings));
  21.  
  22.     }
  23.  
  24.     public static Date getMaxOccurence(Booking[] booking) {
  25.         List<Date> dates = new ArrayList<Date>();
  26.         Date max = new Date();
  27.         int freq = 0;
  28.         for (Booking b : booking) {
  29.             Calendar calendar = new GregorianCalendar();
  30.             calendar.setTime(b.getStartDate());
  31.  
  32.             while (calendar.getTime().before(b.getEndDate())) {
  33.                 Date result = calendar.getTime();
  34.                 dates.add(result);
  35.                 int curr = Collections.frequency(dates, result);
  36.                 if (curr > freq) {
  37.                     freq = curr;
  38.                     max = result;
  39.                 }
  40.                 calendar.add(Calendar.DATE, 1);
  41.             }
  42.         }
  43.         return max;
  44.     }
  45.  
  46.     static class Booking {
  47.         Date startDate;
  48.         Date endDate;
  49.  
  50.         public Booking(Date startDate, Date endDate) {
  51.             this.startDate = startDate;
  52.             this.endDate = endDate;
  53.         }
  54.  
  55.         public Date getStartDate() {
  56.             return startDate;
  57.         }
  58.  
  59.         public void setStartDate(Date startDate) {
  60.             this.startDate = startDate;
  61.         }
  62.  
  63.         public Date getEndDate() {
  64.             return endDate;
  65.         }
  66.  
  67.         public void setEndDate(Date endDate) {
  68.             this.endDate = endDate;
  69.         }
  70.     }
  71. }
Success #stdin #stdout 0.07s 4386816KB
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Thu Oct 13 00:00:00 GMT 2016
https://ideone.com/ZS0FfH
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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