1. Print an array 

You have an array of names called NAMES that contains 20 String values. 

Write an algorithm that will print out all the names.

loop i from 0 to 19

    output NAMES[i]

end loop

2: Print a collection

You have a collection of names called STUDENT_LIST that contains an unknown number of values. 

Write an algorithm that will print out all the student names.

loop while STUDENT_LIST.hasNext()

    output STUDENT_LIST.getNext()

end loop

3: Calculate min/max/average of an array 

You have an array of 7 integers called ARR.

Output the minimum, maximum and average value of the values in the array ARR.

SUM = 0
MAX = ARR[0]
MIN = ARR[0]
loop i from 0 to 6
    SUM = SUM + ARR[i]
    if ARR[i] > MAX then
        MAX = ARR[i]
    end if
    if ARR[i] < MIN then
        MIN = ARR[i]
    end if
end loop
AVERAGE = SUM / 7
OUTPUT MAX, MIN, AVERAGE

4: Calculate min/max/average of a collection 

You have a collection of double values called GRADES. 

Output the minimum, maximum and average value of the values in the collection.

MAX = GRADES.getNext()
MIN = MAX
SUM = 0
COUNT = 0
GRADES.resetNext()
loop while GRADES.hasNext()
    X = GRADES.getNext()
    COUNT = COUNT + 1
    SUM = SUM + X
    if X > MAX then
        MAX = X
    end if
    if X < MIN then
        MIN = X
    end if
end loop
AVERAGE = SUM / COUNT
OUTPUT MAX, MIN, AVERAGE

5: Search a value in an array 

You have a char array of 26 letters called ALPHA containing all the letters of the English alphabet. 

There are no duplicate letters. Output the location (index) of the letter ‘C’.

POSITION = -1
loop I from 0 to 25
    if ALPHA[I] = ‘C’ then
        POSITION = I
    end if
end loop
output POSITION

6: Find a value in a collection (a)

You have a list of students called STUDENT_LIST. 

Search the list for a student called “Sam”. 

Output an appropriate message.

FOUND = false

loop while STUDENT_LIST.hasNext()

X = STUDENT_LIST.getNext()

if X == ‘Sam’ then

FOUND = true

end if

end loop

if FOUND == true then

output ‘Sam was found’

else

output ‘Sam was not found’

end if

7: Find a value in a collection (b)

You have a list of students called STUDENT_LIST. 

Search the list for a student called “Tom”.

The algorithm should be as efficient as possible (i.e. the algorithm should stop searching if Tom is found; no need to search the entire collection).

Output an appropriate message.

FOUND = false

loop while STUDENT_LIST.hasNext() AND FOUND == false

X = STUDENT_LIST.getNext()

if X == ‘Tom’ then

FOUND = true

end if

end loop

if FOUND == true then

output ‘Tom was found’

else

output ‘Tom was not found’

end if

Christos Katsoulas

Computer Science teacher