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TrustPilotChallenge/WhiteRabbit/PrecomputedPermutationsGene...

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