Validate array balanced
Last updated: November 1, 2025
Quick Overview
Given an array of integers, determine if the array is balanced. An array is considered balanced if the sum of the elements in the first half is equal to the sum of the elements in the second half. Return a boolean value indicating whether the array is balanced or not.
Supabase
November 1, 20250
6
1,369 solved
Given an array of integers, determine if the array is balanced. An array is considered balanced if the sum of the elements in the first half is equal to the sum of the elements in the second half. Return a boolean value indicating whether the array is balanced or not.
Coding interviews at Supabase 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
- Recognize the underlying problem pattern (sliding window, two pointers, BFS/DFS, etc.)
- Discuss multiple approaches and trade-offs before coding
- Implement an optimal solution with clean, production-quality code
- Handle all edge cases including boundary conditions and invalid input
- Optimize both time and space complexity with clear justification
- Test your solution systematically with well-chosen examples
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
- Can you solve this iteratively instead of recursively (or vice versa)?
- What happens if the input contains duplicates?
- 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 determine if an array is balanced, we need to check if the sum of the elements in the first half of the array equals the sum of the elements in the second half. This problem can be approached using...
Approach
- First, check if the length of the array is even. If it is odd, return false immediately, as we cannot split it into two equal halves.
- If the length is even, calculate the midpoint of the array. ...
Submit Your Answer
