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Subtract two arrays

dwarnold45
Novice

Jul 19, 2011, 4:38 PM

Post #1 of 3 (643 views)

Subtract two arrays	Can't Post

All,

If I have @a=(5,6,7) and @b=(1,1,1), what's the best way to find the difference @d=(4,5,6)?

D.

BillKSmith
Veteran

Jul 19, 2011, 7:57 PM

Post #2 of 3 (632 views)

Re: [dwarnold45] Subtract two arrays [In reply to]	Can't Post

Use the function pairwise in the module List::MoreUtils. Refer: perldoc List::MoreUtils.
Good Luck,
Bill

miller
User

Jul 23, 2011, 2:47 AM

Post #3 of 3 (605 views)

Re: [dwarnold45] Subtract two arrays [In reply to]	Can't Post

Code

my @a = (5,6,7); 
my @b = (1,1,1); 
 
my @d = map {$a[$_] - $b[$_]} keys @a; 
 
print "@d";

- Miller

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