public void TestGetPermutation()
{
int[] factors = PermutationEnumerator.GetFactors(4);
int[] result = PermutationEnumerator.GetPermutation(4, 21, factors);
Log.Debug(".testGetPermutation result=" + result.RenderAny());
Assert.IsTrue(Arrays.AreEqual(result, new[] { 3, 1, 2, 0 }));
}
public void TestGetFactors()
{
int[] factors = PermutationEnumerator.GetFactors(5);
Assert.IsTrue(Arrays.AreEqual(factors, new[] { 24, 6, 2, 1, 0 }));
factors = PermutationEnumerator.GetFactors(4);
Assert.IsTrue(Arrays.AreEqual(factors, new[] { 6, 2, 1, 0 }));
factors = PermutationEnumerator.GetFactors(3);
Assert.IsTrue(Arrays.AreEqual(factors, new[] { 2, 1, 0 }));
factors = PermutationEnumerator.GetFactors(2);
Assert.IsTrue(Arrays.AreEqual(factors, new[] { 1, 0 }));
factors = PermutationEnumerator.GetFactors(1);
Assert.IsTrue(Arrays.AreEqual(factors, new[] { 0 }));
//Log.debug(".testGetFactors " + Arrays.toString(factors));
}