Count minimum cost in interval list
Last updated: July 12, 2025
Quick Overview
Count the number of connected components in the given interval list.
Discord
July 12, 202526
12
2,408 solved
Count the number of connected components in the given interval list.
This coding problem is frequently asked during Technical Screen at Discord. The interviewer is testing your ability to translate a problem into clean, working code while discussing time and space complexity. Discord expects candidates to write production-quality code, not just solve the puzzle.
What the Interviewer Expects
- Quickly identify the optimal approach and its theoretical basis
- Handle complex algorithm design with multiple interacting components
- Write concise, elegant code under time pressure
- Prove correctness of your approach and discuss alternative solutions
- Optimize beyond the obvious: discuss constant factor improvements
- Address follow-up variations and explain how the solution generalizes
Key Topics to Cover
How to Approach This
- Clarify input constraints and edge cases before writing code.
- Walk through your approach verbally and confirm with the interviewer before coding.
- Start with a brute force solution, then optimize. Mention time and space complexity.
- Test your solution with examples, including edge cases like empty input or duplicates.
- Consider common patterns: sliding window, two pointers, hash map, BFS/DFS, dynamic programming.
Possible Follow-up Questions
- How would your solution change if the input was sorted?
- Can you solve this iteratively instead of recursively (or vice versa)?
- How would you modify your solution to handle streaming input?
Sharpen Your Skills on Codemia
Practice similar problems with our interactive workspace, get AI feedback, and track your progress.
Practice DSA ProblemsSample Answer
Problem Analysis
To solve the problem of counting connected components in an interval list, we can identify that this problem involves merging overlapping intervals. The best approach here is to use a **sorting and me...
Approach
- Sort the intervals: Begin by sorting the list of intervals based on their starting values. For example, given intervals: [(1, 3), (2, 4), (5, 7), (6, 8)], after sorting, they remain the same be...
Submit Your Answer
