Algorithm & Flowchart Solutions
Task 1: Investigate flowchart symbols
The Shorter Oxford defines it as "a diagram showing the movement or action of persons or things in any complex system".
Task 2: Identify algorithm pre-conditions
The goal is to find the largest number in a list of unsorted random numbers.
The algorithm would fail if there were no numbers in the list. Also, what if the list was not numbers but text?
Task 3: Write an algorithm demonstrating sequence
Flowchart: Pseudocode:
READ number1
READ number2
SET result = number1
SET result = result * number2
SET result = result + 27
DISPLAY result
© State of New South Wales, Department of Education and Training, 2006

Algorithm & Flowchart Solutions
Task 4: Draw a flowchart demonstrating sequence
© State of New South Wales, Department of Education and Training, 2006

Algorithm & Flowchart Solutions
Task 5: Write an algorithm demonstrating selection
Pseudocode:
READ testmark
IF testmark > 82 THEN
Display 'Distinction'
ELSE IF testmark > 69 THEN
Display 'Credit'
ELSE IF testmark greater than 49 THEN
Display 'Pass'
ELSE
Display 'Fail'
ENDIF
Flowchart:
© State of New South Wales, Department of Education and Training, 2006

Algorithm & Flowchart Solutions
Task 6: Draw a flowchart demonstrating selection
1.
Draw a flowchart that determines whether the game AI attacks the opponent or not, based on the following conditions: a) If the opponent has developed a barracks, but no soldiers then the AI will not attack, however; b) If the opponent has developed a barracks and produced solders then the AI will attack. c) If the twenty minutes of game time elapses, then the AI will attack anyway.
© State of New South Wales, Department of Education and Training, 2006

Algorithm & Flowchart Solutions
Task 7: Write an algorithm demonstrating iteration
Flowchart: Pseudocode:
READ maxNum
SET total = 0
FOR count = 1 TO maxNum DO
SET total = total + count
ENDFOR
DISPLAY total
OR
READ maxNum
SET total = 0
SET count = 1
WHILE count <= maxNum DO
SET total = total + count
SET count = count + 1
ENDWHILE
DISPLAY total
© State of New South Wales, Department of Education and Training, 2006

Algorithm & Flowchart Solutions
Task 8: Draw a flowchart demonstrating iteration
© State of New South Wales, Department of Education and Training, 2006