public void Solution()
{
/*
* what is the side length of the square spiral for
* which the ratio of primes along both diagonals first falls below 10%?
*/
var sut = new E058SpiralPrimes(100000);
Assert.Equal(26241, sut.GetLengthWhereRationBelow(percent: 10));
/*
* Congratulations, the answer you gave to problem 58 is correct.
*
* You are the 35111th person to have solved this problem.
*/
}
public void Test1()
{
/*
* Starting with 1 and spiralling anticlockwise in the following way, a square spiral with side length 7 is formed.
*
* 37 36 35 34 33 32 31
* 38 17 16 15 14 13 30
* 39 18 5 4 3 12 29
* 40 19 6 1 2 11 28
* 41 20 7 8 9 10 27
* 42 21 22 23 24 25 26
* 43 44 45 46 47 48 49
*
* but what is more interesting is that 8 out of the 13 numbers lying along both diagonals are prime;
* that is, a ratio of 8/13 ≈ 62%.
*
*/
var sut = new E058SpiralPrimes(100);
var ratio = sut.GetRatio(sidelength: 7);
Assert.Equal(8, ratio.Numerator);
Assert.Equal(13, ratio.Denominator);
}
