Dear monks,

I am trying to sort an array that has strings in the format "1-1-1", "1-1-2", "2-3-1" etc. in the ascending order such that 1-1-1 appears before 1-1-2 and so on. Think of each string representing a "chapter-subchapter-verse". I tried the following snippet but it doesn't give me the desirable result. 

my @a = ("1-1-2", "6-1-2", "3-1-4");
my @b = sort { 
   (split /-/, $a)[0] <=> (split /-/, $b)[0] &&
   (split /-/, $a)[1] <=> (split /-/, $b)[1] &&
   (split /-/, $a)[2] <=> (split /-/, $b)[2]
} @a; 
print "@b\n";

[download]

Obviously something's lacking in my understanding of writing a custom sort function. Can someone help me out?

Many thanks

In reply to Custom sort with string of numbers by linuxfan

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