El 27/11/13 07:46, amjad...@gmail.com escribió:
Hello,
I am working on a problem (Bioinformatics domain) where all possible
combinations of input string needs to be printed as sublist
For example:
Input string : "LEQN"
Output= "[L","E","Q","N"]["LE","EQ","QN","NL"] ["LEQ","EQN","QNE","NLE"]
["LEQN"]
The code i have written for this is as follows:
from itertools import chain, repeat, islice
from collections import deque
def sliding_window(iterable, n, fill=False, fillvalue=None):
it = iter(iterable)
if fill:
it = chain(it, repeat(fillvalue, n - 1))
w = deque(islice(it, n - 1))
for x in it:
w.append(x)
yield w
w.popleft()
input="LENQ"
lstinput= list(input)
lenlstinput=len(lstinput)
list1=[''.join(x) for x in sliding_window(lstinput, 2)]
list2= [''.join(x) for x in sliding_window(lstinput, 3)]
list3= [''.join(x) for x in sliding_window(lstinput, 4)]
The output i get as follows:
List 1 is ['LE', 'EN', 'NQ'] Should be ['LE','EN','NQ','QL']
List 2 is ['LEN', 'ENQ'] Should be ['LEN','ENQ','NQL','QLE']
So the question i am asking , how can i add wrapping around sublist in my
sliding window function.
Thanks
Easy :
def getSlice(iterable, start, n):
lit = len(iterable)
end = start + n
return ''.join(iterable[i%lit] for i in range(start, end))
for n in range(1, len(inStr)+1):
[getSlice(inStr, i, n) for i in range(len(inStr))]
results :
['L', 'E', 'Q', 'N']
['LE', 'EQ', 'QN', 'NL']
['LEQ', 'EQN', 'QNL', 'NLE']
['LEQN', 'EQNL', 'QNLE', 'NLEQ']
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