NodeJS / Streaming
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Code Problem / Data Structures and Algorithms / Recursion (32)
Code Problem / Data Structures and Algorithms / Binary Search (30)
Code Problem / Data Structures and Algorithms / Linked Lists (26)
Code Problem / Data Structures and Algorithms / Backtracking (26)
Code Problem / Data Structures and Algorithms / Stacks and Queues (25)
Code Problem / Data Structures and Algorithms / Hashing (24)
Databases / SQL / Backup and Recovery (19)
Code Problem / Data Structures and Algorithms / Arrays and Strings (19)
Databases / SQL / Database Normalization (18)
Code Problem / Data Structures and Algorithms / Time Complexity (17)
Databases / SQL / Locking (16)
Databases / SQL / Replication (15)
Databases / SQL / SQL Queries (13)
Code Problem / Data Structures and Algorithms / Graphs (13)
Databases / SQL / Database Security (13)
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Given a stream of integers, this problem seeks to find the median of the stream at any given point. For example, given the input of [2, 1, 5, 7, 2 , 0, 5], the corresponding output would be [2, 1.5, 2, 3.5, 2, 2, 2].
About this solution: The candidate's solution is correct and demonstrates a level of completeness. The candidate has correctly identified the problem and has provided a solution that solves the problem. The candidate's approach is sound and their use of a binary search is clever. The only improvement that could be made is to provide more comments explaining the code.
Given a stream of integers, this technical problem describes how to print out the average of all the integers seen so far at each point in the stream.
About this solution: The candidate's solution is correct and demonstrates a level of completeness. The solution is optimal in terms of time and space complexity.
Given an input string, this NodeJS code snippet reverses the order of the words.
About this solution: The candidate's solution is correct and uses built-in methods that are optimized for the task at hand.
To calculate the sum of an array of integers, simply add all the integers in the array together. In the example given, the sum would be 1 + 2 + 3 + 4 + 5 , or 15.
About this solution: This solution is correct and demonstrates a good understanding of how to solve the problem. The approach is straightforward and easy to follow.