Package g0701_0800.s0729_my_calendar_i

Class MyCalendar

java.lang.Object
g0701_0800.s0729_my_calendar_i.MyCalendar
public class MyCalendar extends java.lang.Object
729 - My Calendar I.

Medium

You are implementing a program to use as your calendar. We can add a new event if adding the event will not cause a double booking.

A double booking happens when two events have some non-empty intersection (i.e., some moment is common to both events.).

The event can be represented as a pair of integers start and end that represents a booking on the half-open interval [start, end), the range of real numbers x such that start <= x < end.

Implement the MyCalendar class:

  • MyCalendar() Initializes the calendar object.
  • boolean book(int start, int end) Returns true if the event can be added to the calendar successfully without causing a double booking. Otherwise, return false and do not add the event to the calendar.

Example 1:

Input

[“MyCalendar”, “book”, “book”, “book”]

[ [], [10, 20], [15, 25], [20, 30]]

Output: [null, true, false, true]

Explanation:

 MyCalendar myCalendar = new MyCalendar(); 
 myCalendar.book(10, 20); // return True 
 myCalendar.book(15, 25); // return False, It can not be booked because time 15 is already booked by another event. 
 myCalendar.book(20, 30); // return True, The event can be booked, as the first event takes every time less than 20, but not including 20.

Constraints:

  • 0 <= start < end <= 109
  • At most 1000 calls will be made to book.

  • Constructor Summary

    Constructors
    Constructor
    Description
    MyCalendar()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    book(int start, int end)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • MyCalendar

      public MyCalendar()

  • Method Details

    • book

      public boolean book(int start, int end)