Grokking the Coding Interview: Patterns for Coding Questions

Conflicting Appointments (medium)

## Problem Statement

Given an array of intervals representing ‘N’ appointments, find out if a person can **attend all the appointments**.

**Example 1**:
```
Appointments: [[1,4], [2,5], [7,9]]
Output: false
Explanation: Since [1,4] and [2,5] overlap, a person cannot attend both of these appointments.
```
**Example 2**:
```
Appointments: [[6,7], [2,4], [13, 14], [8,12], [45, 47]]
Output: true
Explanation: None of the appointments overlap, therefore a person can attend all of them.
```

**Example 3**:
```
Appointments: [[4,5], [2,3], [3,6]]
Output: false