Problem 114. Check to see if a Sudoku Puzzle is Solved

Description:

Your task, should you choose to accept it, is to make a function that checks to see if a 9x9 matrix of integers represents a completed sudoku puzzle. For more information regarding sudokus, refer to the wikipedia page.

The function will return true only when it's a completed sudoku puzzle. A value of 0 refers to a blank entry.

Example:

   input = [ 8 2 4 9 5 3 6 7 1
             6 3 5 8 1 7 9 2 4
             7 1 9 6 2 4 8 5 3
             5 8 7 2 9 1 3 4 6
             1 4 2 7 3 6 5 8 9
             3 9 6 4 8 5 2 1 7
             2 6 1 5 4 9 7 3 8
             4 7 8 3 6 2 1 9 5
             9 5 3 1 7 8 4 6 2 ];
   answer = true;
   input = [ 8 2 4 9 5 3 6 7 1
             6 3 5 8 1 7 9 2 4
             7 1 9 0 2 4 8 5 3
             5 8 7 2 9 1 3 4 6
             1 4 2 7 3 0 5 8 9
             3 9 6 4 8 5 2 1 7
             2 6 1 5 4 9 7 3 8
             4 7 8 3 6 2 1 9 5
             9 5 3 1 7 8 4 6 2 ];
    answer = false;

Solution Stats

27.41% Correct | 72.59% Incorrect
Last Solution submitted on Mar 01, 2024

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers318

Suggested Problems

More from this Author56

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!