It is more idiomatic (and often simpler) to use Perl-style rather than C-style loops.

Yes, but it won't work if the numbers are too large for integers and have to use floating point.    Then only C style loops will work. 

my @collect = map 0, 0 .. NUM_TOSSES;

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Why are you initializing @collect with NUM_TOSSES + 1 elements?

The idiomatic way to initialize @collect with NUM_TOSSES elements is usually: 

my @collect = ( 0 ) x NUM_TOSSES;

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for ($i = 0; $i < $numTosses+1; $i++) {

foreach my $tailsCt ( 0 .. NUM_TOSSES )

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You have an off-by-one error, it should be: 

foreach my $tailsCt ( 0 .. NUM_TOSSES - 1 )

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Update: oops, I misread the original code.

In reply to Re^2: Monte Carlo - Coin Toss by jwkrahn
in thread Monte Carlo - Coin Toss by James_H

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