Sudoku: Difference between revisions
Content deleted Content added
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[MethodImpl(MethodImplOptions.AggressiveInlining)] |
[MethodImpl(MethodImplOptions.AggressiveInlining)] |
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private static int RowCol(int rc) => rc <= 2 ? 0 : rc <= 5 ? 3 : 6; |
private static int RowCol(int rc) => rc <= 2 ? 0 : rc <= 5 ? 3 : 6; |
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private static IEnumerable<int> GetBox(int[][] grid, int row, int col) => |
private static IEnumerable<int> GetBox(this int[][] grid, int row, int col) => |
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from r in Range(RowCol(row), 3) |
from r in Range(RowCol(row), 3) |
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from c in Range(RowCol(col), 3) |
from c in Range(RowCol(col), 3) |
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grid[row] |
grid[row] |
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.Union(domain.Select(r => grid[r][col])) |
.Union(domain.Select(r => grid[r][col])) |
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.Union(GetBox( |
.Union(grid.GetBox(row, col)) |
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.Except(Unmarked); |
.Except(Unmarked); |
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