用算盘图形表示数字，Python实现

 1 #########################################################################
 2 #                 10-row School abacus
 3 #                         by
 4 #                      Michael H
 5 #########################################################################
 6 #       Description partially extracted from from wikipedia 
 7 #
 8 #  Around the world, abaci have been used in pre-schools and elementary
 9 #
10 # In Western countries, a bead frame similar to the Russian abacus but
11 # with straight wires and a vertical frame has been common (see image).
12 # Helps schools as an aid in teaching the numeral system and arithmetic
13 #
14 #         |00000*****   |     row factor 1000000000
15 #         |00000*****   |     row factor 100000000
16 #         |00000*****   |     row factor 10000000 
17 #         |00000*****   |     row factor 1000000
18 #         |00000*****   |     row factor 100000
19 #         |00000*****   |     row factor 10000
20 #         |00000*****   |     row factor 1000
21 #         |00000****   *|     row factor 100     * 1
22 #         |00000***   **|     row factor 10      * 2
23 #         |00000**   ***|     row factor 1       * 3
24 #                                        -----------    
25 #                             Sum                123 
26 #
27 # Each row represents a different row factor, starting with x1 at the
28 # bottom, ascending up to x1000000000 at the top row.     
29 ######################################################################
30 
31 # TASK:
32 # Define a procedure print_abacus(integer) that takes a positive integer
33 # and prints a visual representation (image) of an abacus setup for a 
34 # given positive integer value.
35 # 
36 # Ranking
37 # 1 STAR: solved the problem!
38 # 2 STARS: 6 < lines <= 9
39 # 3 STARS: 3 < lines <= 6
40 # 4 STARS: 0 < lines <= 3
41 
42 def print_abacus(value):
43     row_number = 1
44     while row_number <= 10:
45         number = value // (10**(10-row_number))
46         if number == 0:
47             print ‘|‘ + ‘0‘*5 + ‘*‘*5 + ‘ ‘*3 + ‘|‘
48         elif number > 0 and number < 5:
49             print ‘|‘ + ‘0‘*5 + ‘*‘*(5-number) + ‘ ‘*3 + ‘*‘*number + ‘|‘
50         else:
51             print ‘|‘ + ‘0‘*(10-number) + ‘ ‘*3 + ‘0‘*(number-5) + ‘*‘*5 + ‘|‘
52         value -= number*(10**(10-row_number))
53         row_number += 1
54         
55     
56     
57         
58 
59 ###  TEST CASES
60 print "Abacus showing 0:"
61 print_abacus(0)
62 #>>>|00000*****   |
63 #>>>|00000*****   |
64 #>>>|00000*****   |
65 #>>>|00000*****   |
66 #>>>|00000*****   |
67 #>>>|00000*****   |
68 #>>>|00000*****   |
69 #>>>|00000*****   |
70 #>>>|00000*****   |
71 #>>>|00000*****   |
72 print "Abacus showing 12345678:"
73 print_abacus(12345678)
74 #>>>|00000*****   |
75 #>>>|00000*****   |
76 #>>>|00000****   *|
77 #>>>|00000***   **|
78 #>>>|00000**   ***|
79 #>>>|00000*   ****|
80 #>>>|00000   *****|
81 #>>>|0000   0*****|
82 #>>>|000   00*****|
83 #>>>|00   000*****|
84 print "Abacus showing 1337:"
85 print_abacus(1337)
86 #>>>|00000*****   |
87 #>>>|00000*****   |
88 #>>>|00000*****   |
89 #>>>|00000*****   |
90 #>>>|00000*****   |
91 #>>>|00000*****   |
92 #>>>|00000****   *|
93 #>>>|00000**   ***|
94 #>>>|00000**   ***|
95 #>>>|000   00*****|