194. Transpose File

Given a text file file.txt, transpose its content.

You may assume that each row has the same number of columns and each field is separated by the ' ' character.

For example, if file.txt has the following content:

name age
alice 21
ryan 30

Output the following:

name alice ryan
age 21 30

accepted result:

less file.txt| awk '{for (i=1;i<=NF;i++) { if (NR==1) {res[i]=$i} else { res[i]=res[i] " " $i} }} END{for (i in res) {print res[i]}}'