Contributed by Anonymous Monk
on Nov 29, 2000 at 07:23 UTC
Q&A
> arrays
Description: I want to multiply the first terms of the arrays with each other,
and the two second terms with each other, etc.
Answer: Can I multiply corresponding numbers in two arrays together? contributed by Fang You could use List::MoreUtils:
use List::MoreUtils qw/pairwise/;
@a = (1..5);
@b = (6..10);
@x = pairwise { $a * $b } @a, @b;
print join ", ", @x;
__END__
6, 14, 24, 36, 50
Be sure to check both array have the same number of elements, or you could get a trail of zeroes:
use List::MoreUtils qw/pairwise/;
@a = (1..5);
@b = (6..8);
@x = pairwise { $a * $b } @a, @b;
print join ", ", @x;
__END__
6, 14, 24, 0, 0
 Answer: Can I multiply corresponding numbers in two arrays together? contributed by Russ I hate to use array indices, but here's one way:
my @Products = map {$Arr1[$_] * $Arr2[$_]} 0..$#Arr1;
This assumes that the arrays @Arr1 and @Arr2
exist and are the same length. 
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