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Annotation of researchv10dc/vol2/anim/is.awk, revision 1.1.1.1

1.1       root        1: awk '
                      2: BEGIN {        n = ARGV[1]     # numer of elements to generate and sort
                      3:        for (i = 1; i <= n; i++) x[i] = 1 + int(25*rand())
                      4:        for (i = 2; i <= n; i++) {
                      5:                for (j = i; j > 1 && x[j] < x[j-1]; j--)
                      6:                        swap(j-1, j)
                      7:                show()
                      8:        }
                      9: }
                     10: function swap(i, j,   t) {
                     11:        t = x[i];  x[i] = x[j];  x[j] = t
                     12: }
                     13: function show(  i) {
                     14:        for (i = 1; i <= n; i++)
                     15:                printf("%3d", x[i])
                     16:        printf("\n")
                     17: }' $*

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