Is there a way to exclude variables from a string array after they've been chosen using menu function?

Materials = ["Aluminum";"Cadmium";"Iron";"Tungsten";string(newMaterial)];% newMaterial is Copper in this case
Choice1 = menu('Please choose the alloy''s first component',Materials);
Choice2 = menu('Please choose the alloy''s second component',Materials);

What I need to do is remove the variable chosen in Choice1 from the options of materials to choose in Choice2. I can't seem to find the command/function that will allow me to do this.

Answer 1

[KSSV]

Read about setdiff. Or use strcmp get the position and remove the string.