Python-based Sudoku Algorithm Instances and python Algorithm Instances

Source: Internet
Author: User

Python-based Sudoku Algorithm Instances and python Algorithm Instances

This example describes how to implement the sudoku Algorithm in python. Share it with you for your reference. The details are as follows:

#-*-Coding: UTF-8-*-''' Created on 2012-10-5 @ author: Administrator ''' from collections import defadicdictimport itertoolsa = [[0, 7, 0, 0, 0, 0, 0, 0], #0 [5, 0, 3, 0, 0, 6, 0, 0], #1 [0, 6, 2, 0, 8, 0, 7, 0], #2 # [0, 0, 0, 3, 0, 2, 0, 5, 0], #3 [0, 0, 4, 0, 1, 0, 3, 0, 0], #4 [0, 2, 0, 9, 0, 5, 0, 0, 0], #5 # [0, 0, 1, 0, 3, 0, 5, 9, 0], #6 [0, 0, 0, 4, 0, 0, 6, 0, 3], #7 [0, 0, 0, 0, 0, 0, 0, 2, 0], #8 #0, 1, 2, 3, | 4, 5, 6, | 7, 8] # a = [# [0, 0, 0, 0, 0, 0, 0, 0], #0 # [0, 0, 0, 0, 0, 0, 0, 0, 0], #1 # [0, 0, 0, 0, 0, 0, 0, 0, 0], #2 ### [0, 0, 0, 0, 0, 0, 0, 0], #3 # [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], #4 # [0, 0, 0, 0, 0, 0, 0], #5 ### [0, 0, 0, 0, 0, 0, 0, 0], #6 # [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], #7 # [0, 0, 0, 0, 0, 0, 0, 0], #8 #0, 1, 2, 3, | 4, 5, 6, | 7, 8 #] exis Ts_d = dict (h_idx, y_idx), v) for h_idx, y in enumerate (a) for y_idx, v in enumerate (y) if v )) h_exist = defaultdict (dict) v_exist = defaultdict (dict) for k, v in exists_d.items (): h_exist [k [0] [k [1] = v v_exist [k [1] [k [0] = vaa = list (itertools. permutations (range (1, 10), 9) h_d ={} for hk, hv in h_exist.items (): x = filter (lambda x: all (x [k] = v for k, v in hv. items (), aa) x = filter (la Mbda x: all (x [vk]! = V for vk, vv in v_exist.items () for k, v in vv. items () if k! = Hk), x) # print x h_d [hk] = xdef test (x, y ): return all ([y [I] not in [x _ [I] for x _ in x] for I in range (len (y)]) def test2 (x ): return len (set (x ))! = 9 s = set (range (9) sudokus = [] for l0 in h_d [0]: for l1 in h_d [1]: if not test (l0 ,), l1): continue for l2 in h_d [2]: if not test (l0, l1), l2): continue #1, 2, verify if test2 ([l0 [0], l0 [1], l0 [2], l1 [0], l1 [1], l1 [2], l2 [0], l2 [1], l2 [2]): continue if test2 ([l0 [3], l0 [4], l0 [5], l1 [3], l1 [4], l1 [5], l2 [3], l2 [4], l2 [5]): continue if test2 ([l0 [6], l0 [7], l0 [8], l1 [6], l1 [7], l1 [8], l2 [6], l2 [7], l2 [8]): continue for l3 in h_d [3]: if not test (l0, l1, l2), l3 ): continue for l4 in h_d [4]: if not test (l0, l1, l2, l3), l4): continue for l5 in h_d [5]: if not test (l0, l1, l2, l3, l4), l5): continue #4, 5, 6 rows for verification if test2 ([l3 [0], l3 [1], l3 [2], l4 [0], l4 [1], l4 [2], l5 [0], l5 [1], l5 [2]): continue if test2 ([l3 [3], l3 [4], l3 [5], l4 [3], l4 [4], l4 [5], l5 [3], l5 [4], l5 [5]): continue if test2 ([l3 [6], l3 [7], l3 [8], l4 [6], l4 [7], l4 [8], l5 [6], l5 [7], l5 [8]): continue for l6 in h_d [6]: if not test (l0, l1, l2, l3, l4, l5,), l6): continue for l7 in h_d [7]: if not test (l0, l1, l2, l3, l4, l5, l6), l7): continue for l8 in h_d [8]: if not test (l0, l1, l2, l3, l4, l5, l6, l7), l8): continue #, 7, 8, and 9 rows for verification if test2 ([l6 [0], l6 [1], l6 [2], l7 [0], l7 [1], l7 [2], l8 [0], l8 [1], l8 [2]): continue if test2 ([l6 [3], l6 [4], l6 [5], l7 [3], l7 [4], l7 [5], l8 [3], l8 [4], l8 [5]): continue if test2 ([l6 [6], l6 [7], l6 [8], l7 [6], l7 [7], l7 [8], l8 [6], l8 [7], l8 [8]): continue print l0 print l1 print l2 print l3 print l4 print l5 print l6 print l7 print l8 sudokus. append (l0, l1, l2, l3, l4, l5, l6, l7, l8 ))

I hope this article will help you with Python programming.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.