Testing Sudoku Puzzle Solutions

Can a Given Array Be a Solution to a Sudoku Puzzle?

Introduction

Sudoku is a popular number puzzle game that requires players to fill a 9x9 grid with numbers from 1 to 9. The puzzle is divided into 3x3 subgrids, and the goal is to ensure that each row, each column, and each subgrid contains all numbers from 1 to 9 without repetition.

Function Overview

The function sudoku takes a 3x3 array representing a subsection of a sudoku puzzle as input. It returns a logical value indicating whether the array could be a solution to the sudoku puzzle.

Function Details

The function checks if the input array satisfies the sudoku rules:

1. Each row must contain all numbers from 1 to 9 without repetition.
2. Each column must contain all numbers from 1 to 9 without repetition.
3. Each 3x3 subgrid must contain all numbers from 1 to 9 without repetition.

Example

For example, consider the following array:

[1, 4, 9;
 6, 3, 7;
 5, 8, 2]

The function sudoku will return true for this array because it satisfies all sudoku puzzle conditions.

On the other hand, for this array:

[1, 4, 4;
 6, 6, 6;
 9, 7, 9]

The function sudoku will return false as it does not meet the sudoku rules.

Final Answer

The function sudoku takes a 3x3 array of integers as input and determines if it could be a solution to a sudoku puzzle by checking if each row, column, and sub-puzzle contains all the numbers from 1 to 9 exactly once.