Loops and Strings in python -

-

given strings s1 , s2, not of same length. create new string consisting of alternating characters of s1 , s2 (that is, first character of s1 followed first character of s2, followed second character of s1, followed second character of s2, , on.

once end of either string reached, remainder of longer string added end of new string. example, if s1 contained "abc" , s2 contained "uvwxyz", new string should contain "aubvcwxyz". associate new string variable s3.

my attempt is:

s3 = ''  = 0  while < len(s1) , < len(s2):      s3 += s1[i] + s2[i]      += 1      if len(s1) > len(s2):          s3 += s1[i:]      elif len(s2) > len(s1):          s3 += s2[i:] 

s1 = "abcdefg" s2 = "hijk" s3 = "" minlen = min(len(s1), len(s2))     x in range(minlen):     out += s1[x]     out += s2[x] out += s1[minlen:] print out

a couple of things keep in mind. first, can treat python string array, , can access item @ given index using brackets. also, second last line makes use of splicing, more information, see how can splice string?


Comments

Post a Comment

Popular posts from this blog

how to do line continuation in perl debugger for entering raw multi-line text (EOT)? -

-
i learning perl. trying in debugger define variable, here-document. not know how enter same code in perl script, in debugger. due new lines present inside eot, makes hard in interactive debugger. here small example. have script: >cat ex1.perl #!/usr/bin/perl -w $s =<<'eot'; first line second line eot print $s now run , gives expected output: >perl ex1.perl first line second line now want same in debugger. tried this: >perl -de0 loading db routines perl5db.pl version 1.39_10 db<1> $s =<<'eot';\ cont: first line\ cont: second line\ cont: eot can't find string terminator "eot" anywhere before eof @ (eval 6) [/usr/share/perl/5.18/perl5db.pl:732] line 2. @ (eval 6)[/usr/share/perl/5.18/perl5db.pl:732] line 2. eval 'no strict; ($@, $!, $^e, $,, $/, $\\, $^w) = @db::saved;package main; $^d = $^d | $db::db_stop; $s =<<\'eot\'; first line second line eot; ' called @ /usr/share/perl...
Read more

javascript - Create websocket without connecting -

-
is there way create websocket without connecting right away? far think var ws = new websocket("ws://ws.my.url.com"); creates , connects right away. i'd create socket, define callbacks, , connect once user clicks connect button. thanks no. creating websocket means you've created connection server (or started process of connecting). there no such thing creating websocket isn't connecting yet. you create object store configuration parameters , tell object connect when wanted to, though i'm not sure why that's better creating actual websocket when connect made. or create function setup work , call function later when user clicks connect button.
Read more

android - Linear layout children not scrolling -

-
i'm trying add image views linear layout @ runtime. <linearlayout android:id="@+id/llfolderlayout" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight=".65" android:orientation="horizontal" android:scrollbars="horizontal" > </linearlayout> linearlayout llfoldertabs = (linearlayout) myfolder.findviewbyid(r.id.llfolderlayout); imageview imgtab = new imageview(activity); imgtab.setid(i); imgtab.settag(i); imgtab.setimagedrawable( mcontext.getresources().getdrawable(r.drawable.icon_folder_inactive)); if (i == 0) { imgtab.setimagedrawable( mcontext.getresources().getdrawable(r.drawable.icon_folder_active)); // imgtab.setpadding(10, 0, 4, 0); linearlayout.layoutparams lp = new linearlayout.layoutparams( 74, layoutparams.match_parent); lp.setmargins(15, 0, 0, 0); imgtab.setlayoutparams(lp); } else { // imgtab....
Read more