52 lines
No EOL
969 B
Crystal
52 lines
No EOL
969 B
Crystal
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module Sudoku
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class BoardException < Exception
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end
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class Board
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alias Value = Nil | Int32
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@grid : Array(Array(Value))
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getter grid
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def initialize(@size : Int32, @block_size : Int32)
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raise BoardException.new() unless @size.divisible_by?(@block_size)
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@grid = Array(Array(Value)).new(@size) { Array(Value).new(@size, nil) }
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end
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def put(value : Value, x, y)
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@grid[y][x] = value
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end
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def get(x, y)
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@grid[y][x]
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end
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def check_valid(value : Value, x, y)
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end
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def extract_row(y)
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@grid[y]
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end
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def extract_column(x)
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(0..@size - 1).map { |i| get(x, i) }
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end
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def extract_block(x, y)
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block_start_x = x - (x % @block_size)
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block_start_y = y - (y % @block_size)
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(block_start_y..block_start_y + @block_size - 1).map { |j|
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(block_start_x..block_start_x + @block_size - 1).map { |i|
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get(i, j)
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}
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}
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end
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end
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end |