import Foundation
// To fill a 3x3 grid to be a valid Sudoku grid, you must ensure that each row,
// column, and the 3x3 grid contains the numbers 1 through 9 without repetition.
func fillSudokuGrid() -> [[Int]] {
var numbers = Array(1...9)
// Shuffle the numbers randomly
numbers.shuffle()
// Initialize a 3x3 grid
var grid = Array(repeating: Array(repeating: 0, count: 3), count: 3)
var index = 0
for i in 0..<3 {
for j in 0..<3 {
grid[i][j] = numbers[index]
index += 1
}
}
return grid
}
func printGrid(_ grid: [[Int]]) {
for row in grid {
print(row.map { String($0) }.joined(separator: " "))
}
}
let grid = fillSudokuGrid()
print("Generated 3x3 Sudoku Grid:")
printGrid(grid)
/*
run:
Generated 3x3 Sudoku Grid:
5 4 6
8 1 7
3 2 9
*/
