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my @nums = $x =~ /(\S+)/g;

my @nums = split(' ', $x);

# @nums = ('1', '11', '2', '22', '222', '3', '33');
my @nums = $x =~ /(\d+)/g;

# @nums = (['1', '11'], ['2', '22', '222'], ['3', '33']);
my @nums = map { [ /(\d+)/g ] } $x =~ /(\S+)/g;

# @nums = ('2', '22', '222');
my @nums = ($x =~ /\s(\S+)/)[0] =~ /(\d+)/g;

# @nums = ('2', '22', '222');
my @nums = (split(' ', $x, 3))[1] =~ /(\d+)/g;