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Ruslan writes code
Uebung macht den Meister.
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About
Ruslan writes code About My name is Ruslan Ledesma. I love solving programming problems and explaining them here. You can also find me from time to time on GitHub and LinkedIn.
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The Category Problem: graph traversal by recursive SQL queries
An interview question in the wild, the Category Problem asks to model a graph of categories of goods in SQL. The sample solution involves a couple of recurs...
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How to count cycles in a complete graph
An example of a question whose answer is an exponential function.
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Travel Itinerary
Given the legs of an itinerary, determine the origin and destination of the trip.
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The Blocks Problem
Interpret a language of four commands to model the interaction of a robot arm with its environment. An exercise in keeping your solution simple.