QUIZ 5
COMP9021 PRINCIPLES OF PROGRAMMING
$ python3
>>> from quiz_5 import *
>>> encode([])
0
>>> decode(0)
[]
>>> encode([1])
7
>>> decode(7)
[1]
>>> encode([1, 0])
116
>>> decode(116)
[1, 0]
>>> encode([1, 0, -2])
7468
>>> decode(7468)
[1, 0, -2]
>>> encode([1, 0, -2, 3])
477983
>>> decode(477983)
[1, 0, -2, 3]
>>> encode([1, 0, -2, 3, -11])
489455311
>>> decode(489455311)
[1, 0, -2, 3, -11]
>>> decode(1)
>>> decode(2)
>>> decode(5)
>>> decode(1000)
>>> for i in range(11):
... proportion_of_valid_codes(i)
...
1.0
0.5
0.3333333333333333
0.5
0.6
0.5
0.42857142857142855
0.5
0.4444444444444444
0.4
0.36363636363636365
Date: Trimester 1, 2025.
2 COMP9021 PRINCIPLES OF PROGRAMMING
>>> for i in range(5, 11):
... proportion_of_valid_codes(5, i)
...
0.0
0.0
0.3333333333333333
0.25
0.2
0.16666666666666666
>>> ^D
$

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