Fix comment in sudoku.rs (TheAlgorithms#523)

ddotthomas · web-flow · commit e6be8cc46156 · 2023-09-02T19:51:39.000Z
diff --git a/src/backtracking/sudoku.rs b/src/backtracking/sudoku.rs
@@ -13,7 +13,7 @@ impl Sudoku {
     }
 
     fn find_empty_cell(&self) -> Option<(usize, usize)> {
-        // Find a empty cell in the board (returns (-1, -1) if all cells are filled)
+        // Find a empty cell in the board (returns None if all cells are filled)
         for i in 0..9 {
             for j in 0..9 {
                 if self.board[i][j] == 0 {

Original file line number	Diff line number	Diff line change
`@@ -13,7 +13,7 @@ impl Sudoku {`
`13`	`13`	`}`
`14`	`14`
`15`	`15`	`fn find_empty_cell(&self) -> Option<(usize, usize)> {`
`16`		`- // Find a empty cell in the board (returns (-1, -1) if all cells are filled)`
	`16`	`+ // Find a empty cell in the board (returns None if all cells are filled)`
`17`	`17`	`for i in 0..9 {`
`18`	`18`	`for j in 0..9 {`
`19`	`19`	`if self.board[i][j] == 0 {`