print '\n'.join(' '.join('%sx%s=%s' %(x, y, x*y) for x in xrange(1, y+1) )for y in xrange(1, 10))
0
陶小川 - less is more
awk 'BEGIN{for(i=1;i<10;i++){for(j=1;j<=i;j++){printf j" * "i" = "i*j"\t"}print}}'
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