r - Optimize a code combining title of a list -

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i have list factor.lst composed of 16 elements. each element of list vector of characteres. obtain new vector of size [1:16] composed combinaison of each charactere string. manage obtain want using :

col.titles <- c(paste(factor.lst[[1]], collapse=" "), (paste(factor.lst[[2]], collapse=" ") ... (paste(factor.lst[[16]], collapse=" ")))

but that's lot of line reach 16 ! how can call list directly instead of each element within list ? thinking of that's not working.

col.titles <- c(paste(factor.lst[[1:16]], collapse=" "))

sapply apply function each element of object, can use apply paste(x, collapse=' ') each element of factor.lst.

try:

sapply(factor.lst, paste, collapse=' ')

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