Yun YAN Puriney
Puriney
/ MergeSortInversionTimes.pl
Created
July 25, 2013 19:23
— forked from puriney2/MergeSortInversionTimes.pl
PERL: Merge Sort Inverstion Times
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| our $invTimes =0; | |
| sub mergeSortInversions{ | |
| my @x =@_; | |
| return @x if (@x < 2); | |
| my $mid = int (@x/2); | |
| my @a = mergeSortInversions(@x[0 .. $mid - 1]); | |
| my @b = mergeSortInversions(@x[$mid .. $#x]); | |
| for (my $i = 0; $i < @x; $i++) { | |
| if (!@a){ |
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