September 2018
Beginner
360 pages
9h 28m
English
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Lesson 29. Capstone: Sudoku rules
Sudoku is a logic puzzle that takes place on a 9 × 9 grid (see en.wikipedia.org/wiki/Sudoku). Each square can contain a digit from 1 through 9. The number zero indicates an empty square.
The grid is divided into nine subregions that are 3 × 3 each. When placing a digit, it must adhere to certain constraints. The digit being placed may not already appear in any of the following:
- The horizontal row it’s placed in
- The vertical column it’s placed in
- The 3 × 3 subregion it’s placed in
Use a fixed-size (9 × 9) array to hold the Sudoku grid. If a function or method needs to modify the array, remember that you need ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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