Problem 44341. Hexagonal numbers on a spiral matrix

Solution 1305838

Submitted on 20 Oct 2017 by Mehmet OZC

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Mehmet OZC on 21 Oct 2017

First line is adopted from James's solution: https://www.mathworks.com/matlabcentral/cody/problems/2455-diagonal-of-a-spiral-matrix/solutions/1239477

James on 2 Nov 2017

I was just happy I could use "diag" and "spiral" in this problem, but it's always nice to see some of my solutions get used in other code.

Test	Status	Code Input and Output
1	Pass	m = 1; y_correct = '1'; assert(isequal(hexagonalSpiral(m),y_correct))
2	Pass	m = 2; y_correct = '16'; assert(isequal(hexagonalSpiral(m),y_correct))
3	Pass	m = 5; y_correct = '1293'; assert(isequal(hexagonalSpiral(m),y_correct))
4	Pass	m = 16; y_correct = '420800'; assert(isequal(hexagonalSpiral(m),y_correct))
5	Pass	m = 100; y_correct = '4000333360'; assert(isequal(hexagonalSpiral(m),y_correct))
6	Pass	m = 1295; y_correct = '1456830580539887'; assert(isequal(hexagonalSpiral(m),y_correct))
7	Pass	m = 2500; y_correct = '39062505208334000'; assert(isequal(hexagonalSpiral(m),y_correct))
8	Pass	m = 5000; y_correct = '1250000041666668000'; assert(isequal(hexagonalSpiral(m),y_correct))
9	Pass	m = 8000; y_correct = '13107200170666668800'; assert(isequal(hexagonalSpiral(m),y_correct))