%-------------------------------------------------------------------
% Problem 3: scalars, arrays, operators
% Fill in the blanks with the output that MATLAB will generate
% for the following input.
%-------------------------------------------------------------------
a=1-1-1-1
% a =
%
%      ____________________

b = [1;2;3]'
% b =
% 
%     _______________________

c = 1 + sqrt(-2)
% c =
% 
%     _______________________

d = [1 2 3;3,4,5]
d(:,3) = d(:,1)
d(:,[3 4])=d(:,[2 3])
% d =
% 
%     _______________________


%-------------------------------------------------------------------
% Problem 4: Conditionals
% Fill in the blanks with the output that MATLAB will generate
% for the following input.
%-------------------------------------------------------------------

a = ~( (1>0) | ~(1>0) )
% a =
% 
%     _______________________

b = [1 2;3 4]==2
% b =
% 
%     _______________________


c = ~~3
% c =
% 
%     _______________________

d = -~3
% d =
% 
%     _______________________

e = ~-3
% e =
% 
%     _______________________

f = sin(pi)==0
% f =
% 
%     _______________________

a = 0; b = 0; c = 2;
g = ~(a <= b & b < c & a < c)
% g =
% 
%     _______________________
h = (a == 0 & b ~= c & a ~= ~c)
% h =
% 
%     _______________________


%-------------------------------------------------------------------
% Problem 5: Conditionals, nested conditions

% Write a program that asks the user for a name with 3 letters. Your
% program should store the name in a variable called $name$. The 
% program should output whether the name that the user typed in is:
% in upper case (e.g. TOM), or 
% in lower case (e.g. tom), or 
% in title case (e.g. Tom), or 
% in messy case, which is non of the above (e.g. ToM, TOm, tOm, ...). 
   
% Some help on how to deal with strings:
% Imagine you have a string assigned to a variable, e.g. 
% var='Jen'
% There is a Matlab function called $double$ that converts a string 
% into an array of numbers where each number represents the position 
% of the according letter in the table of ASCII values. Here is a small 
% portion of the table of ASCII values:
% 
%   letter       position            letter       position   
%      A            65                  a            97
%      B            66                  b            98
%      C            67                  c            99
%      D            68                  d           100
%      E            69                  e           101
%      F            70                  f           102
%           ...                              ...
%           ...                              ...
%      U            85                  u            
%      V            86                  v           118
%      W            87                  w           119
%      X            88                  x           120
%      Y            89                  y           121
%      Z            90                  z           122


% If you typed name=double('Jen') in the Command Window then an array 
% containing 3 numbers: 74  101  110 would be stored in w.
% For simplicity, you can assume that any letter that is not uppercase
% (position 65 through 90) is lower case.

%-------------------------------------------------------------------