• When can we use arrays (either in Java or MATLAB/Octave)?
• Discuss about the simillarity and difference between "Cells" and "Structs" in MATLAB/Octave.
• Practical question 1: Do two different blocks of codes (shown below) make any difference (in MATLAB/Octave)?

// the first block of codes in MATLAB

>> circle.radius = 2.5;

>> circle.center = [0 1];

>> circle.linestyle = '';

>> circle.color = 'red';

// the second block of codes in MATLAB >> circle(1).radius = 2.5;

>> circle(1).center = [0 1];

>> circle(1).linestyle = '';

>> circle(1).color = 'red';

• Practical question 2: What may be the benefits of using "Structs" over "Cells" in MATLAB/Octave?