R split string for each row [duplicate]

Answer 1

We can use cSplit

library(splitstackshape)
cSplit(df1, 'word', ',', 'long')
#   word count
#1:    a     5
#2:    b     5
#3:    c     5
#4:    c     3
#5:    d     3
#6:    c    10
#7:    d    10
#8:    e    10