Some exam questions,from previous midterm exams:

1. Money Methods
Write a function method theTotal(p,n,d,q) which returns the total value (in cents) 
of the given four slots (parameters) representing the number of pennies, nickels, 
dimes, and quarters.

Write a routine method outTotal(p,n,d,q) which outputs the total value (in cents) 
of the given four slots (parameters) representing the number of pennies, nickels, 
dimes, and quarters.

2. Same Accounts
Write a boolean function a.isSameAs(b), which determines whether two accounts a, b 
from the Account class are the same; i.e. they have the same identity (string) 
and balance (real).

3. Another Dispenser: of 15 cent items
Draw the state diagram of a dispenser where the input is a sequence of nickels, 
dimes, and quarters, and the outputs are the item (costing 15 cents), 
and the proper change. 

4. Nasty UnIndented Nests
Write truth tables for the following pieces of Java code; 
note that a, b are boolean conditions and Y, Z are actions, such as output.
   a. if (a) if (b) Y; else Z;
   b. if (a) {if (b) Y;} else Z;
   c. if (a) Y; else if (b) Z;
   d. if (a && b) Y; else Z;

5.Plot DaysInMonth
Given a function daysInMon(m) that determines the number of days in any given month m,
write a routine which plots this number horizontally as shown below (for a leap year).

m           1         2         3
1  1234567890123456789012345678901
2  12345678901234567890123456789
3  1234567890123456789012345678901
4  123456789012345678901234567890
5  1234567890123456789012345678901
6  123456789012345678901234567890
7  1234567890123456789012345678901
8  1234567890123456789012345678901
9  123456789012345678901234567890
10 1234567890123456789012345678901
11 123456789012345678901234567890
12 1234567890123456789012345678901



7. Bars again
Given an array H of size 7, corresponding to the number of hours worked on each day of the week, 
write that part of a program to create a horizontal bar chart, where the length of each bar is 
proportional to the number of hours worked.

For example, if the values in the array are 4, 8, 6, 4, 8, 8, 4, and
the thickness is input as 2, and
the scale multiplier is 3, then
the bar plot will look like the following
with a gap between the bars.

111111111111
111111111111

222222222222222222222222
222222222222222222222222

333333333333333333
333333333333333333

444444444444
444444444444

555555555555555555555555
555555555555555555555555

666666666666666666666666
666666666666666666666666

777777777777
777777777777


7. Array Trace
Trace the following part of a program when acting on the given array, 
and indicate briefly what it does (not how it does it).
Would you package this method as a function or a routine? Why?

-- Array Trace
Boxes i, j, k, temp ofType int
Box A ofType int[]

NewArray A ofType int[5]

Set A[0] = 1
Set A[1] = 9
Set A[2] = 6
Set A[3] = 8
Set A[4] = 3

Set i = 0
Repeat
ExitOn (i > 4)
   Set  j = 4 - i
-- Does what??
   Set temp = A[i] 
   Set A[i] = A[j]
   Set A[j] = temp
   Inc i by 1
EndRepeat

Set k = 0
Repeat
ExitOn (k > 4)
   Outputln A[k]
   Inc k by 1
EndRepeat