Find connected components in grid
Last updated: March 26, 2026
Quick Overview
Given a grid, find the kth largest element efficiently using Binary Search.
Rippling
March 26, 20267
5
2,373 solved
Given a grid, find the kth largest element efficiently using Binary Search.
Coding interviews at Rippling focus on problem-solving approach as much as the final solution. The interviewer wants to see you break down the problem, consider edge cases, and optimize iteratively. Communication throughout the process is key.
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?
- What is the worst-case input for your solution?
- Can you solve this iteratively instead of recursively (or vice versa)?
- Can you solve this in a single pass?
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 find the kth largest element in a grid, we can view the grid as an unsorted collection of elements. The key observation here is that the problem can be modeled using a binary search algorithm on th...
Approach
- Identify the Range: Determine the minimum and maximum values in the grid to establish the initial bounds for binary search.
- Binary Search Setup: Set low to the minimum value and high to...
Submit Your Answer
