Form 4 - Computer
2024-2025
Floor 4 - Computer Room
Mr. Peter
While Loop & List
Santa Rosa de Lima English Secondary School
聖羅撒英文中學
Colégio de Santa Rosa de Lima - Secção Inglesa
Outline
List
1.
Explore the concept of List
How to process List in While Loop
2.
Focusing on the List processing in looping
Python List implementation
3.
Define while loop statement for List scanning
What is List?
What is List?
0
1
...
[
]
2
1
4
1
1
1
3
1
boxes =
In Python:
boxes = [ 1, 1, 1, 1, 1 ]print( boxes[ 0 ] )Get variable from List
list[ position ]
Output: 1
What is List?
0
a
"
"
2
c
4
e
1
b
3
d
text =
We can also get letter from text
text = "abcde"print( text[ 0 ] )Get letter from text
Output: a
text[ position ]
Python List Exercises
Python Nested Loops - Ex01
Multiplication Table using while Loop
1.
Save your file as "ClassNumber_YourName_Ex01.py"
Write a Python program that prints a 10x10 multiplication table using a while loop.
2
3
Use a while loop to iterate through the numbers.
1
( The variable "i" increases from 0 to 10)
Print the multiplication table.
1 2 3 4 5 6 7 8 9
2 4 6 8 10 12 14 16 18
3 6 9 12 15 18 21 24 27
4 8 12 16 20 24 28 32 36
5 10 15 20 25 30 35 40 45
6 12 18 24 30 36 42 48 54
7 14 21 28 35 42 49 56 63
8 16 24 32 40 48 56 64 72
9 18 27 36 45 54 63 72 81 Use a while loop inside the previous loop to iterate through the numbers.
( The variable "j" increases from 0 to 10)
Python Nested Loops - Ex01
Multiplication Table using while Loop
1.
Save your file as "ClassNumber_YourName_Ex01.py"
Write a Python program that prints a 10x10 multiplication table using a while loop.
2
3
Use a while loop to iterate through the numbers.
1
( The variable "i" increases from 0 to 10)
Print the multiplication table.
1 2 3 4 5 6 7 8 9
2 4 6 8 10 12 14 16 18
3 6 9 12 15 18 21 24 27
4 8 12 16 20 24 28 32 36
5 10 15 20 25 30 35 40 45
6 12 18 24 30 36 42 48 54
7 14 21 28 35 42 49 56 63
8 16 24 32 40 48 56 64 72
9 18 27 36 45 54 63 72 81 Use a while loop inside the previous loop to iterate through the numbers.
( The variable "j" increases from 0 to 10)
Python Nested Loops - Ex02
String Subtraction
1.
Save your file as "ClassNumber_YourName_Ex02.py"
Write a Python program that removes all characters from one string that appear in another string.
Python Output Result
Result: "he"str1 = "hello"
str2 = "world"