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The C# Algorithms and SQL online test assesses candidates' knowledge of SQL queries and evaluates their algorithmic-thinking skills using C#.
It's an ideal test for pre-employment screening. A good developer should be able to work closely with the database layer and solve back-end problems where any improvement to computational complexity would produce a significantly more efficient solution.
This online test requires candidates to design and analyze algorithms using C# and to write SQL queries that extract, combine, and manipulate data.
Binary search tree (BST) is a binary tree where the value of each node is larger or equal to the values in all the nodes in that node's left subtree and is smaller than the values in all the nodes in that node's right subtree.
Write a function that, efficiently with respect to time used, checks if a given binary search tree contains a given value.
For example, for the following tree:
Call to Contains(n2, 3) should return true since a tree with root at n2 contains number 3.
Given the following data definition, write a query that returns the number of students whose first name is John.
TABLE students id INTEGER PRIMARY KEY, firstName VARCHAR(30) NOT NULL, lastName VARCHAR(30) NOT NULL
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