Problem 139. Determine if a Given Number is a Triangle Number

Solution 44788

Submitted on 18 Feb 2012 by Alan Chalker

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Test	Status	Code Input and Output
1	Pass	%% x = 1:100; y_correct = false(1,100); y_correct([1 3 6 10 15 21 28 36 45 55 66 78 91]) = true; assert(isequal(isTriangleNumber(x),y_correct))
2	Pass	%% x = 1; y_correct = true; assert(isequal(isTriangleNumber(x),y_correct))
3	Pass	%% x = [4912734125;4912734126]; y_correct = [false;true]; assert(isequal(isTriangleNumber(x),y_correct))

Test

Status

Code Input and Output

Pass

%% x = 1:100; y_correct = false(1,100); y_correct([1 3 6 10 15 21 28 36 45 55 66 78 91]) = true; assert(isequal(isTriangleNumber(x),y_correct))

Pass

%% x = 1; y_correct = true; assert(isequal(isTriangleNumber(x),y_correct))

Pass

%% x = [4912734125;4912734126]; y_correct = [false;true]; assert(isequal(isTriangleNumber(x),y_correct))

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