Here is a list
l1 = list(apple=c(2,23,43), pear = c(4,5), pineapple= 2, banana=97)
and here is the data.frame I am trying to construct from this list.
data.frame(fruit = c("apple","apple","apple","pear","pear","pineapple", "banana"), number = c(2,23,43,4,5,2,97))
      fruit number
1     apple      2
2     apple     23
3     apple     43
4      pear      4
5      pear      5
6 pineapple      2
7    banana     97
Can you help me with that?
 
    