How to change the order of words with alphabetic order

Question

I got a dataset with a list of keywords (1 keyword / row).

1. I m looking for a way to create a new column (ALPHABETICAL) based on the KEYWORD column. The value o

Answer 1

df$ALPHABETICAL <- sapply(strsplit(df$KEYWORD," "),function(x) paste(sort(x),collapse=" "))

df
#              KEYWORD       ALPHABETICAL
# 1         house blue         blue house
# 2         blue house         blue house
# 3      my blue house      blue house my
# 4 this house is blue blue house is this
# 5         sky orange         orange sky
# 6         orange sky         orange sky
# 7     the orange sky     orange sky the

data

df <- data.frame(KEYWORD = c(
  'house blue',
  'blue house',
  'my blue house',
  'this house is blue',
  'sky orange',
  'orange sky',
  'the orange sky'),stringsAsFactors = FALSE)