Cody

# Problem 1215. Diophantine Equations (Inspired by Project Euler, problem 66)

Solution 1961972

Submitted on 6 Oct 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
x = 2; y_correct = 3; assert(isequal(Diophantine(x),y_correct))

y = 1 1

Assertion failed.

2   Fail
x = 151; y_correct = 1728148040; assert(isequal(Diophantine(x),y_correct))

ans = 'There are no solutions to the equation x^2 - 151 y^2 = -1.' y = []

Assertion failed.

3   Fail
x = 61; y_correct = 1766319049; assert(isequal(Diophantine(x),y_correct))

y = 29718 3805

Assertion failed.

4   Fail
x = 66; y_correct = 65; assert(isequal(Diophantine(x),y_correct))

ans = 'There are no solutions to the equation x^2 - 66 y^2 = -1.' y = []

Assertion failed.

5   Fail
x = 12000; y_correct = 13007560326001; assert(isequal(Diophantine(x),y_correct))

ans = 'There are no solutions to the equation x^2 - 12000 y^2 = -1.' y = []

Assertion failed.

6   Fail
x = 2345; y_correct = 15129001; assert(isequal(Diophantine(x),y_correct))

ans = 'There are no solutions to the equation x^2 - 2345 y^2 = -1.' y = []

Assertion failed.

7   Fail
j=[10:10:90 110:10:200]; v=arrayfun(@(x) Diophantine(j(x)),1:length(j)); y_correct=[19 9 11 19 99 31 251 9 19 21 11 6499 71 49 721 339 161 52021 99]; assert(all(isequal(v,y_correct)))

y = 3 1

Error using arrayfun Non-scalar in Uniform output, at index 1, output 1. Set 'UniformOutput' to false. Error in Test7 (line 1) j=[10:10:90 110:10:200]; v=arrayfun(@(x) Diophantine(j(x)),1:length(j));