Past Challenges

26. Merge Intervals

Write a function solve that merges overlapping intervals and returns the merged list. Intervals are represented as lists of two integers: start and end.

Example: Input: [[1,3],[2,6],[8,10],[15,18]]

Output: [[1,6],[8,10],[15,18]]

Make sure you return your solution, don't print!

def solve(intervals):
    pass