Leetcode no. 194

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

# Read from the file file.txt and print its transposed content to stdout.
awk '{ for(i=1; i<=NF; i++) 
{if(NR==1){ a[i]=$i; }
else {a[i]=a[i] " " $i;}}}
END { for(i=1; i<=NF;i++){print a[i];}}' file.txt