1. 1. Check reaction 2. Check water 3. Check heater 4. Check gas
Assignment 3
Zhiyong Yang
CS10051
Summer, 2006
Instructor: Dean Zeller
Check reaction
1. Check stirring
2. Check color
3. Check odor
4. Check meter
5. Check flask
6. END
Check meter
1. Check system
2. Check protect gas
3. Check branch gas
4. Check temperature
5. Check vacuum gauge
6. END
Check safety
1. Check reaction
2. Check water
3. Check heater
4. Check gas
5. Check solvent
6. END
Check water
1. Check tap water
2. Check condensing water
3. Check distilled water
4. Check running water
5. Check valves
6. END
Check running water
1. Check intake pump
2. Check pipes
3. Check connections
4. Check outlet
5. Check rate
6. END
Ready go home
1. Check safety
2. Wash hands
3. Sign notes
4. Turn off lights
5. Lock door
6. END
Wash hands
1. Remove gloves
2. Throw gloves
3. Rinse hands
4. Apply soap
5. Rinse
6. Wipe dry
7. END

2. Instructor: Dean Zeller
Assignment 4
Zhiyong Yang
CS10051
Summer, 2006
Instructor: Dean Zeller

3. Program 1: Counting (Start, End)
Steps for counting with start and end
Set I to start
While I < = end Do
output I
set I to I + 1
Endwhile
While I >= end Do
set I to I – 1
Stop
Execution history
Input: start = 21, end = 25
1. Steps for counting with start and end
2. Set I to start
3. While I <= end Do
4. output I
5. set I to I + 1
6. Endwhile
7. While I <= end Do
8. output I
9. set I to I + 1
10.Endwhile
11.While I <= end Do
12. output I
13. set I to I + 1
14.Endif
15.While I <= end Do
16. output I
17. set I to I + 1
18.Endwhile
19.While I <= end Do
20. output I
21. set I to I + 1
22.Endwhile
23.While I <= end Do
24.stop
output 21 22 23 24 25 26
Analysis
Total iteration number N = 5
N = (END – START) + 1
Total executive lines: 23
4N + 3

4. Program 2: Meet in the middle (Bottom, Top)
Steps for meet with bottom and top
If bottom > top then
set temp to bottom
set bottom to top
set top to temp
Endif
While bottom < top
Output bottom
Output top
Set bottom to bottom + 1
Set top to top – 1
Endwhile
Stop
Execution history output
Input: bottom = 3, top = 7
1. Steps for meet with bottom and top
2. If bottom > top then
3. endif
4. While bottom < top
5. Output bottom 3
6. Output top 7
7. Set bottom to bottom
8. Set top to top – 1 6
9. endwhile
10. If bottom > top then
11. endif
12. While bottom < top
Output bottom 4
Output top 6
Set bottom to bottom +1 5
Set top to top
17. endwhile
18. If bottom > top
19. Endif
20. While bottom < top
21. Endwhile
22. stop
Analysis
Total iteration number N = 2
N = (bottom - top)/2
Total executive lines: 22
8N + 6

5. Program 2: Meet in the middle (Bottom, Top)
Steps for meet with bottom and top
If bottom > top then
set temp to bottom
set bottom to top
set top to temp
Endif
While bottom < top
Output bottom
Output top
Set bottom to bottom + 1
Set top to top – 1
Endwhile
Stop
Execution history output
Input: bottom = 25, top = 21
1. Steps for meet with bottom and top
2. If bottom > top then
3. Set temp to bottom 25
4. set bottom to top 21
5. Set top to temp 25
6. endif
7. While bottom < top
Output bottom 21
Output top 25
10. Set bottom to bottom
11. Set top to top
12. endwhile
13. If bottom > top
14. endif
15. While bottom < top
Output bottom 22
Output top 24
Set bottom to bottom
Set top to top
20. endwhile
21. If bottom > top
22. Endif
23. While bottom < top
24. Endwhile
25. stop
Analysis
Total iteration number N = 2
N = (bottom - top)/2
Total executive lines: 25
8N + 9

6. Program 4: Sort 3 (A, B, C)
Steps for sort of A, B and C
If A > B then
set temp to B
set B to A
set A to temp
Endif
If B > C then
Set temp to C
Set C to B
Set B to temp
Output A
Output B
Output C
Stop
Execution history output
Input: A = 23 B = 18 C = 9 A B C temp
1. Steps for sort of A,B and C
2. If A > B then
3. Set temp to B
4. Set B to A
5. Set A to temp
6. Endif
7. If B > C then
Set temp to C
Set C to B
Set B to temp
11.Endif
12.If A > B then
Set temp to B
Set B to A
Set A to temp 9
16.Endif
17.Output A 9
18.Output B
19.Output C
20.Stop
Analysis
Total iteration number N = 3
Total executive lines: 20
5N + 5