Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



Re: find position in a list made by string by searching
Posted:
Apr 4, 2013 10:30 PM


list1 = {"a", "b something", "a", "a", "b", "c", "b"};
pos = Position[list1, _String?( StringLength[#] > 1 && StringTake[#, 1] == "b" &)]
{{2}}
Bob Hanlon
On Wed, Apr 3, 2013 at 10:50 PM, Joug Raw <jougraw@gmail.com> wrote:
> > I have a list of strings like > list1={{"a", "b something", "a", "a", "b", "c", "b"} > In this list, 'something' is a sting that I will not know in advanced and > there are several spaces between the 'b' and the 'something' in one string. > The number of the spaces is unknown. > > I want to find out the position of the this "b something" sting in the > list. So, I did, > > Position[list1, "b*"] > > and I also tried, > Position[list1,"b"~~___ ] > > both of them gave me {} as results. > > Also Cases[list1,"b"~~___] or Cases[list1, "b*"] does not work. I can get > the correct position only if I give the exact "b something" as the > searching pattern. What is the easiest way to search with a incomplete > string pattern in this case? Thanks for your help. > > >



