Struct Sudoku

pub struct Sudoku { /* private fields */ }

Implementations

impl Sudoku

pub fn new(n: usize) -> (Self, Self)

Populates a Sudoku board with n hints. Returns (unsolved sudoku, solved sudoku).

pub fn decimate(&mut self, n: usize) -> Result<(), String>

Removes elements from a filled sudoku until there are n elements left, while having only 1 solution.

pub fn solve(&mut self, r: usize, c: usize) -> i32

Returns the number of different solutions of a given Sudoku call this function with sudoku.solve(0, 0).

pub fn fill(&mut self, r: usize, c: usize) -> Result<(), ()>

Fills an empty sudoku board. Row and col are the first empty index. Call this function with sudoku.fill(0, 0) to fill an empty board completely.

pub fn solved(&self) -> bool

Returns true if the sudoku is completely solved.

pub fn check_all(&self) -> bool

Checks all rows, cols and squares by checking these indexes.

X** *** ***
*** X** ***
*** *** X**
*X* *** ***
*** *X* ***  the Xs get checked
*** *** *X*
**X *** ***
*** **X ***
*** *** **X

pub fn check(&self, r: usize, c: usize) -> bool

Returns true if the row, column and square of the indices have no duplicate SudokuValue.

pub fn count(&self, val: SudokuValue) -> usize

Returns how often the SudokuValue is on the board.

pub fn get_row(&self, r: usize) -> Option<[&SudokuValue; 9]>

Returns the specified row.

pub fn get_column(&self, c: usize) -> Option<[&SudokuValue; 9]>

Returns the specified column.

pub fn get_square(&self, r: usize, c: usize) -> Option<[&SudokuValue; 9]>

Returns the square in which the indices lie.

pub fn get(&self, r: usize, c: usize) -> Option<&SudokuValue>

Returns the SudokuValue at the specified indices.

pub fn set(&mut self, r: usize, c: usize, val: SudokuValue)

Sets the value at the specified indices.

Trait Implementations

impl Clone for Sudoku

fn clone(&self) -> Sudoku

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Sudoku

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Ord for Sudoku

fn cmp(&self, other: &Sudoku) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Sudoku

fn eq(&self, other: &Sudoku) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Sudoku

fn partial_cmp(&self, other: &Sudoku) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<&str> for Sudoku

fn try_from(sud_str: &str) -> Result<Self, Self::Error>

The provided &str has to have a length of 81 and is only allowed to have the chars in 0-9.

type Error = String

The type returned in the event of a conversion error.

impl Copy for Sudoku

impl Eq for Sudoku

impl StructuralPartialEq for Sudoku