Intervals appear in:
- meetings
- bookings
- time ranges

## Merge intervals
```python
def merge(ints):
    ints.sort()
    res = [ints[0]]
    for s, e in ints[1:]:
        last = res[-1]
        if s <= last[1]:
            last[1] = max(last[1], e)
        else:
            res.append([s, e])
    return res

print(merge([[1,3],[2,6],[8,10]]))
```

## Graph
```mermaid
flowchart LR
  A[1-3] --> B[2-6]
  B --> C[Merged 1-6]
```

## Remember
- sort first
- then merge overlaps


Handle overlapping intervals using sorting and merging patterns, common in scheduling and timelines.

Interval Structures

Master fundamental data structures and their implementations.

Interval Structures

Merge intervals

Graph

Remember

More on Data Structures

Data Structures Intro

Big O Basics

List Fundamentals