Question

why does it print atm?.. i don't understand.. plz help

Answer 1

Why does what? Link to code on a paste service so we can look at it? Please do not just paste here unless you put ``` (the one that shares ~) above and below. The differences is this:

for x in range(10)
some loop stuff
some more looping!

```
for x in range(10)
some loop stuff
some more looping!
```

Now copy and paste both of those.... The top will probably collapse on you.

Answer 2

def f(s):
if len(s) <= 1:
return s
return f(f(s[1:])) + s[0] #Note double recursion
print f('mat')

Answer 3

this is one of the quiz questions. quiz 1 , #3

Answer 4

adding a print statement helps http://dpaste.com/1345029/

Answer 5

Do you know that in recitation 5 the TA explained that problem?
the video address for recitation 5 is
http://www.archive.org/download/MIT6.00SCS11/MIT6_00SCS11_rec05_300k.mp4

Answer 6

f('mat') = ff('at') + 'm'
f('at') = ff('t') + 'a' = 't' +'a' = 'ta'
ff('at') = f('ta') = ff('a') + 't' = 'at'
f('mat') = ff('at') + 'm' = 'at' + 'm' ='atm'