Problem Statement
Schedule Validator
You're a busy professional trying to determine if you can attend all the meetings in your calendar for the day.
Given an array of meeting time intervals where each interval consists of a start and end time [start, end], determine if it's possible for you to attend all meetings without any conflicts.
A conflict occurs when two meetings overlap, meaning one meeting starts before another meeting ends.
Examples
Example 1:
Input: intervals = [[0,30],[5,10],[15,20]]
Output: false
Explanation: The first meeting [0,30] overlaps with both the second meeting [5,10] and the third meeting [15,20], so you cannot attend all meetings.
Example 2:
Input: intervals = [[7,10],[2,4]]
Output: true
Explanation: The first meeting is from 7 to 10, and the second meeting is from 2 to 4. Since they don't overlap, you can attend both meetings.
Constraints
- 0 <= intervals.length <= 10^4
- intervals[i].length == 2
- 0 <= start < end <= 10^6
Problem Breakdown
To solve this problem, we need to:
- Two meetings conflict if one starts before the other ends
- Sorting the intervals by start time makes it easier to check for conflicts
- After sorting, we only need to compare adjacent intervals
- If any pair of adjacent intervals overlap, it's impossible to attend all meetings
- This problem is a simple application of interval scheduling
String Problems
Learning Objective
Apply string manipulation concepts to solve a real-world problem.
Schedule Validator
You're a busy professional trying to determine if you can attend all the meetings in your calendar for the day.
Given an array of meeting time intervals where each interval consists of a start and end time [start, end], determine if it's possible for you to attend all meetings without any conflicts.
A conflict occurs when two meetings overlap, meaning one meeting starts before another meeting ends.
Examples
Example 1:
The first meeting [0,30] overlaps with both the second meeting [5,10] and the third meeting [15,20], so you cannot attend all meetings.
Example 2:
The first meeting is from 7 to 10, and the second meeting is from 2 to 4. Since they don't overlap, you can attend both meetings.
Problem Breakdown
Constraints:
- 0 <= intervals.length <= 10^4
- intervals[i].length == 2
- 0 <= start < end <= 10^6
Key Insights:
Two meetings conflict if one starts before the other ends
Sorting the intervals by start time makes it easier to check for conflicts
After sorting, we only need to compare adjacent intervals
If any pair of adjacent intervals overlap, it's impossible to attend all meetings
This problem is a simple application of interval scheduling
Real-World Application
This problem has several practical applications:
Calendar Management
Checking if a set of appointments can all be attended without conflicts.
Resource Scheduling
Determining if a single resource (like a meeting room) can accommodate all requested time slots.
Time Management
Planning personal or professional schedules to avoid overbooking.
Project Planning
Ensuring that tasks assigned to a single person don't have time conflicts.
Interview Scheduling
Checking if a candidate or interviewer can attend all scheduled interviews.