Problem 5. Triangle Numbers

Solution 11489

Submitted on 28 Jan 2012 by John D'Errico

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John D'Errico on 28 Jan 2012

Of course, this solution, while short, is NOT the best solution! Clearly the best solution is the far more efficient: n*(n+1)/2

Test	Status	Code Input and Output
1	Pass	%% n = 1; t = 1; assert(isequal(triangle(n),t))
2	Pass	%% n = 3; t = 6; assert(isequal(triangle(n),t))
3	Pass	%% n = 5; t = 15; assert(isequal(triangle(n),t))
4	Pass	%% n = 30; t = 465; assert(isequal(triangle(n),t))