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Diffstat (limited to 'randomize.awk')
-rw-r--r-- | randomize.awk | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/randomize.awk b/randomize.awk new file mode 100644 index 00000000..88f86da2 --- /dev/null +++ b/randomize.awk @@ -0,0 +1,23 @@ +# Copyright (c) 2005 Silicon Graphics, Inc. All Rights Reserved. + +# randomize stdin. + +function randomize(array, N) { + for(i = 0; i < N; i++) { + j = int(rand()*N) + if ( i != j) { + tmp = array[i] + array[i] = array[j] + array[j] = tmp + } + } +return +} + +{ + srand() + for (i = 0; i < NF; i++ ) array[i] = $(i+1) + randomize(array, NF) + for (i = 0; i < NF; i++) printf("%s ", array[i]) +} + |