Who can help with awk file manipulation?

Question

bash

There are 10 columns with 10 rows. 1 word in each column.
using awk to swap the halves of the words along the diagonal a[i][i],
that is, the word WORD, we get RDWO. word length can be fixed. the result can be output or written to a file.
I can neither change halves of words, nor walk diagonally to change halves. can you advise something?
PS no need to write "google", tk. I read a lot of sites and manuals and did not find the information I needed

Answer 1

What's difficult?

#! /bin/awk -f

function reverse_halves(a)
{
        n = length(a);
        n2 = int(n / 2);

        return substr(a, n2 + 1, n - n2) substr(a, 1, n2);
}

BEGIN { i = 1; }
{
        for (j = 1; j <= NF; ++j)
                printf("%s ", i == j ? reverse_halves($j) : $j);
        printf("\n");
        ++i;
}

Answer 2

Throw an example of an input line and an example of an output line