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This is the second part of the SQLxD series. For your convenience you can find other parts in the table of contents in Part 1 – XML Transformation In order to implement SQLxD database, we need to know, what kind of queries we support. Here is subset of SQL-92 grammar: Here is grammar used by … Continue reading SQLxD Part 2 — Grammar
This is the forty forth part of the ILP series. For your convenience you can find other parts in the table of contents in Part 1 – Boolean algebra Today we are going to solve Pizza practice problem from Hash Code 2017 contest organized by Google. Task description Introduction Did you know that at any … Continue reading ILP Part 44 — Pizza riddle simplified
This is the forty thrid part of the ILP series. For your convenience you can find other parts in the table of contents in Part 1 – Boolean algebra We have already seen how to implement function in ILP. Last time we used comparisons, today we will perform bit operations. Idea Having non-negative variables and … Continue reading ILP Part 43 — Maximum revisited
This is the first part of the SQLxD series. For your convenience you can find other parts using the links below : Part 1 — XML Transformation Part 2 — Grammar Part 3 — Model and parsing XML Part 4 — Selectors Part 5 — Generating columns Part 6 — FROM Part 7 — WHERE … Continue reading SQLxD Part 1 — XML Transformation
This is the forty second part of the ILP series. For your convenience you can find other parts in the table of contents in Part 1 – Boolean algebra Today we solve another puzzle: Fifteen puzzle. Let’s begin. Game Image from Wikipedia. In order to solve the game using single tile moves, we need 80 … Continue reading ILP Part 42 — Fifteen puzzle