Sorting
You are encouraged to solve this task according to the task description, using any language you may know.
Sort an Array of Strings, from large to small and lexicographic for Strings of equal length
Perl
Interpeter: Perl
Numeric sort
my @sorted = sort {$a<=>$b} (3, 6, 4, 5, 2, 7, 1);
Alpha-Numeric sort
my @sorted = sort ('this', 'that', 'and', 'the', 'other');
Numeric sort or Alpha-Numeric sort if a numeric sort cannot be done
# note, this can be a oneliner
my @sorted = sort {
($a =~ /^\-?\d+\.?\d*$/ and $b =~ /^\-?\d+\.?\d*$/) ? $a <=> $b : $a cmp $b
} ('this', 'that', 'and', 'the', 'other', 3, 6, 4, 5, 2, 7, 1);
Python
Interpreter: Python 2.5
Python's lists have a method for in-place sorting; there's also a built-in sorted() method that can sort any iterable.
# create a sample list words = ['Long', 'words', 'are', 'more', 'interesting', 'than', 'short', 'ones'] # order it and keep the result on another variable sorted_words = sorted(words, key = lambda word: (-len(word), word)) # sorted_words: ['interesting', 'short', 'words', 'Long', 'more', 'ones', 'than', 'are']
Ruby
#create a test array
ary=['Long','words','are','more','interesting','than','short','ones']
ary.sort_by {|a| [-a.size,a]}
# => ["interesting", "short", "words", "Long", "more", "ones", "than", "are"]