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30 lines
1.1 KiB
30 lines
1.1 KiB
namespace WhiteRabbit
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{
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using System.Collections.Generic;
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using System.Linq;
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internal static class PrecomputedPermutationsGenerator
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{
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private static PermutationsGenerator.Permutation[][] Permutations { get; } = new[]
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{
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PermutationsGenerator.HamiltonianPermutations(0).ToArray(),
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PermutationsGenerator.HamiltonianPermutations(1).ToArray(),
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PermutationsGenerator.HamiltonianPermutations(2).ToArray(),
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PermutationsGenerator.HamiltonianPermutations(3).ToArray(),
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PermutationsGenerator.HamiltonianPermutations(4).ToArray(),
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PermutationsGenerator.HamiltonianPermutations(5).ToArray(),
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PermutationsGenerator.HamiltonianPermutations(6).ToArray(),
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PermutationsGenerator.HamiltonianPermutations(7).ToArray(),
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};
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public static IEnumerable<PermutationsGenerator.Permutation> HamiltonianPermutations(int n)
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{
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if (n > 9)
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{
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return PermutationsGenerator.HamiltonianPermutations(n);
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}
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return Permutations[n];
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}
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}
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}
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