alternate method for solving it

Question

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Given an "out" string length 4, such as "<<>>", and a word, return a new string where the word is in the middle of the out string, e.g. "<<word>>".

Python

make_out_word('<<>>', 'Yay') → '<<Yay>>'
make_out_word('<<>>', 'WooHoo') → '<<WooHoo>>'
make_out_word('[[]]', 'word') → '[[word]]'

def make_out_word(out, word):
	    x=out[0:2]
	    y=out[2:]
	    var=(x,word,y)
	    print '%s%s%s'%var

Posted 22-Jun-15 9:05am

Member 11784210

Updated 22-Jun-15 9:53am

Albert Holguin

v2

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ZurdoDev 22-Jun-15 15:46pm

It is incredibly rude to post your homework without even putting it into your own words or without even asking a question. Booo.

Sergey Alexandrovich Kryukov 22-Jun-15 17:25pm

I paid attention for that after reading your comment (and basically agree with your, reported the post).
I guess, the inquirers "own words" are there in the title of the question.

At the same time, the issue the inquirer faces and does not even properly recognized is so characteristic that I decided to post an answer and even consider the answer pretty interesting.

—SA

Sergey Alexandrovich Kryukov 22-Jun-15 16:50pm

You probably mean "alternative method", not "alternate". Why would you need an alternative?
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2015-06-22T11:02:00

I don't think the implementation needs alternative approach, but I think the formulation of the problem and the method profile strongly requires improvements.

The big problem of your formulation is that is implies strongly ad-hoc behavior, something opposite to being abstract and universal. In your implementation, you hard-code immediate constants 0 and 2, which is always bad (for maintenance and everything else), but you have to blame the problem formulation a lot more then the implementation. Even with perfect implementation, when the opening "brackets" has any number of characters other then 2, your method fails. Moreover, the signature of the method is not self-commenting. If give the user no clue on the requirements for the first parameter; and the requirements are just very unnatural. This is not just bad, this is very bad.

At the same time, more neat solution is obvious. Use different signature:

Python

def makeOutWord(bra, word, ket):
    # concatenate bra, word and ket,
    # in this order,
    # ...and return the result

I'm also not sure that such a trivial method is really needed, but let's set it aside and assume it is needed, say, due to frequent use of such word sandwiching.

Implementation just does not matter and can be based on the same formatting approach you have used. As you can see, nothing will need to be hard-coded. Moreover, the method signature is intuitive. My naming only helps me; I use this naming sometimes. I borrowed it from my highly respected colleague Paul Dirac who first introduced it :-):
https://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation[^],
https://en.wikipedia.org/wiki/Paul_Dirac[^].

—SA

Xiao Ling · Answer 2 · 2015-07-06T17:28:00

Alternative way:
1. Convert string to list
2. Insert the word
3. Print the list

Code:

Python

def make_out_word(out, word):
        new_out = list(out)
        new_out.insert(2, word)
        print "".join(new_out)

make_out_word('<<>>', 'Yay')
make_out_word('<<>>', 'WooHoo')
make_out_word('[[]]', 'word')

alternate method for solving it

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