How to redirect output in multiple columns in bash?

Question

I am running a test multiple times on terminal and redirecting output to a file. While redirecting I want each run as a separate column. Currently, I am able to get the following:

Run1
1
2
3
4
Run2
1
2
3
4

How to redirect it as follow:

Run1  Run2
1      1
2      2
3      3
4      4

Answer 1

With pr:

pr -2 -t -s file

or from stdin:

cat file | pr -2 -t -s

Output:

Run1    Run2
1       1
2       2
3       3
4       4

See: man pr