A very good Data Analyst with advanced Python and SQL skills

I need someone that can confidently ace a Data Analyst coding assessment focusing on data structures, algorithms, and solution design. You can expect questions that challenge your ability to solve problems efficiently and effectively using various programming concepts. Here are some potential types of questions you might encounter:

Array and String Manipulation:

Find the maximum subarray sum in a given array.

Implement an algorithm to rotate an array.

Write a function to check if a string is a palindrome.

Linked Lists:

Reverse a singly linked list.

Detect a cycle in a linked list.

Merge two sorted linked lists.

Trees and Graphs:

Implement a binary search tree.

Conduct a breadth-first search (BFS) or depth-first search (DFS) on a graph.

Find the shortest path between two nodes in a graph.

Sorting and Searching Algorithms:

Implement quicksort or mergesort.

Write an algorithm for binary search.

Find the kth largest element in an unsorted array.

Dynamic Programming:

Find the longest increasing subsequence in an array.

Compute the minimum path sum in a grid.

Solve the 0/1 knapsack problem.

Databases and SQL Queries:

Write a SQL query to find the second highest salary.

Design a database schema for a given problem statement.

Optimize a given SQL query.

Solution Design:

Design a parking lot system using object-oriented principles.

Propose a data model for an e-commerce platform.

Outline an approach to scale a given algorithm for large datasets.

Big Data Technologies (if applicable):

Basic questions on Hadoop, Spark, or other big data tools.

How to handle large datasets efficiently.

Writing map-reduce jobs (if relevant to the role).

Statistical Analysis and Data Processing:

Write a program to calculate statistical measures like mean, median, mode.

Implement data normalization or standardization techniques.

Process and analyze large datasets using Python libraries like Pandas.

Remember, while these questions give a good overview of what you might expect, the actual questions will depend on the specific requirements of the role and the current trends in data analysis and software development.

What I’m looking for is a very reliable Data Analyst/Engineer that can write clean, efficient code, understanding the underlying principles of the various programming concepts and areas listed above.

Python

Hadoop

Big Data Sales

SQL

Map Reduce