Pascal's triangle

l=10;for((i=0;i<$l;i++));do eval "a$i=($(pv=1;v=1;for((j=0;j<$l;j++));do [ $i -eq 0 -o $j -eq 0 ]&&{ v=1 && pv=1; }||v=$((pv+a$((i-1))[$((j))]));echo -n "$v ";pv=$v;done;));";eval "echo \"\${a$i[@]}\"";done | column -t;
Sample Output
1  1   1   1    1    1     1     1      1      1
1  2   3   4    5    6     7     8      9      10
1  3   6   10   15   21    28    36     45     55
1  4   10  20   35   56    84    120    165    220
1  5   15  35   70   126   210   330    495    715
1  6   21  56   126  252   462   792    1287   2002
1  7   28  84   210  462   924   1716   3003   5005
1  8   36  120  330  792   1716  3432   6435   11440
1  9   45  165  495  1287  3003  6435   12870  24310
1  10  55  220  715  2002  5005  11440  24310  48620

0
2011-02-11 17:00:20

What Others Think

If you want only the triangle: l=10;for((i=0;i<$l;i++));do eval "a$i=($(pv=1;v=1;for((j=0;j<$l-$i;j++));do [ $i -eq 0 -o $j -eq 0 ]&&{ v=1 && pv=1; }||v=$((pv+a$((i-1))[$((j))]));echo -n "$v ";pv=$v;done;));";eval "echo \"\${a$i[@]}\"";done | column -t; 1 1 1 1 1 1 1 1 1 1 1 2 3 4 5 6 7 8 9 1 3 6 10 15 21 28 36 1 4 10 20 35 56 84 1 5 15 35 70 126 1 6 21 56 126 1 7 28 84 1 8 36 1 9 1
glaudiston · 616 weeks and 6 days ago
l=15;for((i=0;i<$l;i++));do eval "a$i=($(pv=1;v=1;for((j=0;j<$l-$i;j++));do [ $i -eq 0 -o $j -eq 0 ]&&{ v=1 && pv=1; }||v=$((pv+a$((i-1))[$((j))]));echo -n "$v ";pv=$v;done;));";eval echo "$(for((k=0;k<=$i;k+ +)); do eval "echo -n \"\$((a\$((i-k))[k])) \""; done)";done; 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 7 21 35 35 21 7 1 1 8 28 56 70 56 28 8 1 1 9 36 84 126 126 84 36 9 1 1 10 45 120 210 252 210 120 45 10 1 1 11 55 165 330 462 462 330 165 55 11 1 1 12 66 220 495 792 924 792 495 220 66 12 1 1 13 78 286 715 1287 1716 1716 1287 715 286 78 13 1 1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1
glaudiston · 616 weeks and 6 days ago
{ l=15;for((i=0;i<$l;i++));do eval "a$i=($(pv=1;v=1;for((j=0;j<$l-$i;j++));do [ $i -eq 0 -o $j -eq 0 ]&&{ v=1 && pv=1; }||v=$((pv+a$((i-1))[$((j))]));echo -n "$v ";pv=$v;done;));";o="$(eval echo "$(for((k=0;k 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 7 21 35 35 21 7 1 1 8 28 56 70 56 28 8 1 1 9 36 84 126 126 84 36 9 1 1 10 45 120 210 252 210 120 45 10 1 1 11 55 165 330 462 462 330 165 55 11 1 1 12 66 220 495 792 924 792 495 220 66 12 1 1 13 78 286 715 1287 1716 1716 1287 715 286 78 13 1 1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1
glaudiston · 616 weeks and 6 days ago
The last coment show the triangle nicely. { l=15;for((i=0;i<$l;i++));do eval "a$i=($(pv=1;v=1;for((j=0;j<$l-$i;j++));do [ $i -eq 0 -o $j -eq 0 ]&&{ v=1 && pv=1; }||v=$((pv+a$((i-1))[$((j))]));echo -n "$v ";pv=$v;done;));";o="$(eval echo "$(for((k=0;k<=$i;k++)); do eval "echo -n \"\$((a\$((i-k))[k])) \""; done)")";echo "$o";s="${#o}"; done; } | while read l; do j=$((s-${#l}/2)); echo "$(while ((i++ < j)); do echo -n " ";done;)$l";done 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 7 21 35 35 21 7 1 1 8 28 56 70 56 28 8 1 1 9 36 84 126 126 84 36 9 1 1 10 45 120 210 252 210 120 45 10 1 1 11 55 165 330 462 462 330 165 55 11 1 1 12 66 220 495 792 924 792 495 220 66 12 1 1 13 78 286 715 1287 1716 1716 1287 715 286 78 13 1 1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1
glaudiston · 616 weeks and 6 days ago
arrrg... the space on begin of line as been cuted-out for persistence I WILL try again, with $. in the start of line: { l=15;for((i=0;i<$l;i++));do eval "a$i=($(pv=1;v=1;for((j=0;j<$l-$i;j++));do [ $i -eq 0 -o $j -eq 0 ]&&{ v=1 && pv=1; }||v=$((pv+a$((i-1))[$((j))]));echo -n "$v ";pv=$v;done;));";o="$(eval echo "$(for((k=0;k<=$i;k++)); do eval "echo -n \"\$((a\$((i-k))[k])) \""; done)")";echo "$o";s="${#o}"; done; } | while read l; do j=$((s-${#l}/2)); echo "$(while ((i++ < j)); do echo -n " ";done;)$l";done . 1 . 1 1 . 1 2 1 . 1 3 3 1 . 1 4 6 4 1 . 1 5 10 10 5 1 . 1 6 15 20 15 6 1 . 1 7 21 35 35 21 7 1 . 1 8 28 56 70 56 28 8 1 . 1 9 36 84 126 126 84 36 9 1 . 1 10 45 120 210 252 210 120 45 10 1 . 1 11 55 165 330 462 462 330 165 55 11 1 . 1 12 66 220 495 792 924 792 495 220 66 12 1 . 1 13 78 286 715 1287 1716 1716 1287 715 286 78 13 1 . 1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1
glaudiston · 616 weeks and 6 days ago
aff... forget it... but if you test the command in shell will get a formated output like a perfect triangle.
glaudiston · 616 weeks and 6 days ago
Very pretty :-)
flatcap · 616 weeks and 6 days ago
Very helpful and understandable information you have discussed with us that would be wise. The students who need to learn about machine language can grab help here and learn in detail. I must recommend time4writing everyone to avail the programming help here.
RaymondVance · 110 weeks and 2 days ago
Thanks for this information. I really appreciate the information that you have provided.
jacobhue · 40 weeks ago
Your writing is really inspiring, especially because it's so colorful and fresh. I also enjoyed your first paragraph—thanks for sharing this story with us! omegle chatrandom bazoocam
jacobhue · 39 weeks and 2 days ago
If you ever notice your rig stopping a little slow of late, give the Vancouver Mobile Truck Repair Co. Engine Diagnostics And Repair
bahamianiri · 15 weeks and 6 days ago
Pug Puppies for Sale Near Me pugs puppies for sale teacup pugs for sale pug puppies for sale by owner pug puppies ohio PUG PUPPY FOR SALE NEAR ME PUG PUPPIES FOR SALE pug puppies for sale in kentucky Pug Puppies for Sale Under $500 Near Me pug puppies for sale in texas pug puppies for sale $200 pugs for sale near me under $500 pugs for sale under $400 near me pugs for sale near me puppies for sale near me under $500 pug puppies for sale under $1,000 near me pug for sale pug puppies for sale under $300 Brindle Pug Pitbull Pug Mix Pugs for sale cheap Cheap pug affordable pug puppies for sale near me black pugs for sale near me White Pugs for sale pug dog for sale free pug puppies pug puppies for sale in my area mn pug breeders pug puppies indiana pugs for sale michigan PUG PUPPY ADOPTION Pug puppies for sale Pug puppies for sale near me Pug puppies near me Pug Puppies for Sale Under $500 Near Me Cute Pug Puppies Black pug puppies Black pug puppies for sale pug puppies for adoption black pug puppies for sale near me chihuahua pug mix puppies how much is a pug puppy teacup pug puppies baby pug puppies pictures of pug puppies pug puppies for sale in Ohio pug puppies price pug mix puppies teacup pug puppies for sale best food for pug puppy newborn pug puppies pug puppies craigslist pug puppies for sale craigslist adorable pug puppies how much does a pug puppy cost Pitbull pug mix puppies pug pit mix puppy pug puppies for sale $200 pug puppies for sale in NJ Pug puppies for sale in Wisconsin pug puppy cost pug puppy food royal canin pug puppy royal canin pug puppy food fawn pug puppy pug puppies for sale florida pug puppies for sale in Indiana pug puppies for sale in KY pug puppies for sale in NC pug dog puppy AKC Registered Pug Puppies For sale cheap pug puppies for sale near me cheap pug puppies for sale in California cheap pug puppies for sale in nj Black Pug Puppies for sale pugs puppies for sale
rahimhh21 · 14 weeks and 4 days ago
Pug Puppies for Sale Near Me pugs puppies for sale teacup pugs for sale pug puppies for sale by owner pug puppies ohio PUG PUPPY FOR SALE NEAR ME PUG PUPPIES FOR SALE pug puppies for sale in kentucky Pug Puppies for Sale Under $500 Near Me pug puppies for sale in texas pug puppies for sale $200 pugs for sale near me under $500 pugs for sale under $400 near me pugs for sale near me puppies for sale near me under $500 pug puppies for sale under $1,000 near me pug for sale pug puppies for sale under $300 Brindle Pug Pitbull Pug Mix Pugs for sale cheap Cheap pug affordable pug puppies for sale near me black pugs for sale near me White Pugs for sale pug dog for sale free pug puppies pug puppies for sale in my area mn pug breeders pug puppies indiana pugs for sale michigan PUG PUPPY ADOPTION Pug puppies for sale Pug puppies for sale near me Pug puppies near me Pug Puppies for Sale Under $500 Near Me USA USA USA USA USA USA Cute Pug Puppies Black pug puppies Black pug puppies for sale pug puppies for adoption black pug puppies for sale near me chihuahua pug mix puppies how much is a pug puppy teacup pug puppies baby pug puppies baby pug puppies for sale pictures of pug puppies pug puppies for sale in Ohio pug puppies price pug mix puppies teacup pug puppies for sale best food for pug puppy newborn pug puppies pug puppies craigslist pug puppies for sale craigslist adorable pug puppies how much does a pug puppy cost Pitbull pug mix puppies pug pit mix puppy pug puppies for sale $200 pug puppies for sale in NJ Pug puppies for sale in Wisconsin pug puppy cost pug puppy food royal canin pug puppy royal canin pug puppy food fawn pug puppy pug puppies for sale florida pug puppies for sale in Indiana pug puppies for sale in KY pug puppies for sale in NC pug dog puppy AKC Registered Pug Puppies For sale cheap pug puppies for sale near me cheap pug puppies for sale in California cheap pug puppies for sale in nj Black Pug Puppies for sale pugs puppies for sale
Perfecthomepugs · 5 weeks and 4 days ago
Thank you so much for sharing these with us. Really appreciate the efforts truck sales dublin
Jasminejas · 1 week and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

You must be signed in to comment.

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands



Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: