Validate array complete
Last updated: January 1, 2026
Quick Overview
Given an array of integers, write a function to validate whether the array is complete, meaning that it contains all integers from 1 to n, where n is the length of the array. The function should return true if the array is complete and false otherwise.
NVIDIA
January 1, 202680
3
3,176 solved
Given an array of integers, write a function to validate whether the array is complete, meaning that it contains all integers from 1 to n, where n is the length of the array. The function should return true if the array is complete and false otherwise.
Coding interviews at NVIDIA 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
- Identify the correct data structure and algorithm for the problem
- Write clean, bug-free code with proper variable naming
- Analyze time and space complexity correctly
- Handle basic edge cases (empty input, single element)
- Communicate your thought process while coding
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 you modify your solution to handle streaming input?
- How would you test this solution thoroughly?
- What happens if the input contains duplicates?
- Can you solve this in a single pass?
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Practice DSA ProblemsSample Answer
Problem Analysis
To determine if an array is complete, we need to verify that it contains every integer from 1 to n, where n is the length of the array. This problem suggests a straightforward approach using a set to ...
Approach
- Initialize a Set: Create an empty set to store the integers found in the array.
- Iterate through the Array: Loop through each element in the array and add it to the set if it is in the ra...
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