Python Mania-1

There are four numbers: 1, 2, 3, 4, how many three digits can be made up of each other without repeating numbers? What's the number?

Turn the numbers into characters and put the characters together:

#!/usr/bin/env python#-*-coding:utf-8-*-x =0 forIinchRange (1,5):     forJinchRange (1,5):          forKinchRange (1,5):            if(i!= J) and(i! = k) and(J! =k): Num="'. Join (Map (str,[i,j,k)) x+ = 1Print 'Section'+STR (x) +'the number is:'+NumPrint 'Total'+STR (x) +'The number satisfies the condition. '

Magical bit operations:

 #  !/usr/bin/env python  #  -*-coding:utf-8-*- #   coding:utf-8  #   from 00 01 10 to £ º  for  num in  Range (6,58 = num >> 4 & 3 b = num >> 2 & 3 c  = num & 3 if  (a^b) and  (b^c) and  (C^a)) : #   xor  print  a+1,b+1,c+1 

num = 6 000110
000000 & 000011 = 000000   0
000001 & 000011 = 000001   1
000110 & 000011 = 000010   2
000001:1 000011:3 000010:2  

The

num = 7   000111
000000 & 000011 = 000000    0
000001 & 000011 = 000001    1
000111 & 000011 = 000011    3
000001:1 000010:2 000011:3
True
1,2,4

Python Mania-1