Problem 3031. Expression or variable?

Solution 587983

Submitted on 25 Feb 2015 by Yalong Liu

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Test	Status	Code Input and Output
1	Pass	%% x = 1; assert(isequal(are_variables(x),1))
2	Pass	%% x = 1; assert(isequal(are_variables(1),0))
3	Pass	%% x = 1; assert(isequal(are_variables('x'),0))
4	Pass	%% assert(isequal(are_variables('x',1,2),0))
5	Pass	%% a = 1; b=0; assert(isequal(are_variables(a,b),1))
6	Pass	%% assert(isequal(are_variables(1,2,3,4,5),0))
7	Pass	%% a = 1; assert(isequal(are_variables(a,a,a),1))
8	Pass	%% a = 1; b=0; c=ones(5); assert(isequal(are_variables(a,'a'),0))
9	Pass	%% x = 1; y=0; zz=ones(5); assert(isequal(are_variables(zz,'a'),0))
10	Pass	%% x = 1; y=0; z=ones(5); assert(isequal(are_variables(x,y,z),1))