"prasad rao" <prasadarao...@gmail.com> wrote
    a=[21,56,35,47,94,12]
     b=[]

  for x in a:
b.append (min(a))
a.remove (min(a))

It is not Compleating .Doing only 3 rounds.Why?

Think about what is happening.
for x in a

x takes the next value of x after each iteration.
Each iteration reduces the size of a so after 3 iterations x will be the 3rd value and there are only 3 values left. So x is at the end of the list and the loop stops.

So as Mark said, don't change the list while iterating over it - its a bit like cutting off the branch of the tree that you are sitting on!

But why are you trying to sort in this fashion? Its extremely inefficient compared to using the built in methods.

--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld

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