max_awk holp

1cpuer

Here is an example that treats its input as a two-dimensional array of fields; it rotates this array 90 degrees clockwise and prints the result.  It assumes that all lines have the same number of elements:
{     if (max_nf < NF)          max_nf = NF     max_nr = NR     for (x = 1; x <= NF; x++)          vector[x, NR] = $x}END {     for (x = 1; x <= max_nf; x++) {          for (y = max_nr; y >= 1; --y)               printf("%s ", vector[x, y])          printf("\n")     }}
When given the input:
1 2 3 4 5 6
2 3 4 5 6 1
3 4 5 6 1 2
4 5 6 1 2 3
the program produces the following output:
4 3 2 1
5 4 3 2
6 5 4 3
1 6 5 4
2 1 6 5
3 2 1 6
https://www.gnu.org/software/gawk/manual/gawk.html#Arrays
文件：
123456
abcd
2345678
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