i have written simple python program:
#!/usr/bin/env python3.5 import sys, itertools scharacters = '123' icombinationlength in range(0, len(scharacters)+1): acombination in itertools.combinations_with_replacement(scharacters, icombinationlength): print(''.join(acombination)) this outputs following:
1 2 3 11 12 13 22 23 33 111 112 113 122 123 133 222 223 233 333 however combinations of numbers 1 2 , 3, need include:
311 312 313 321 322 323 331 332 333 and can see above, not. have seen other posts giving combinations_with_replacement function given solution possible combinations of characters passed in. yet not seem happening. doing wrong here, , how can possible combinations of characters in characters variable?
thanks time ;-)
"combinations" order-insensitive term; if have 113, don't need 131 or 311, because of them same "combination" (if input sequence combinations_with_replacement unique, view outputs being unique values after converting collections.counter; regardless of order, 2 1s , 3 collections.counter({1: 2, 3:1})).
if want order sensitive version of combinations_with_replacement (so 113, 131 , 311 separate outputs), use itertools.product repeat argument (repeat must passed keyword due design of product, takes variable length positional arguments):
scharacters = '123' icombinationlength in range(0, len(scharacters)+1): acombination in itertools.product(scharacters, repeat=icombinationlength): print(''.join(acombination)) 