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Algorithms & data structures

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Algorithms & data structures medium

Validate Sudoku Board Rows Columns and Boxes in Python

Validate a 9x9 Sudoku board by checking that each row, column, and 3x3 box contains the numbers 1 through 9 exactly once.

sudoku validation matrix
Python 
def validate_sudoku(board):
    def is_valid_group(group):
        return sorted(group) == list(range(1, 10))

    def get_columns():
        return [[board[r][c] for r in range(9)] for c in range(9)]

    def get_boxes():
        boxes = []
        for box_row in range(0, 9, 3):
            for box_col in range(0, 9,…
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