diff options
Diffstat (limited to 'vendor/plugins/rspec/examples/pure/stack.rb')
-rw-r--r-- | vendor/plugins/rspec/examples/pure/stack.rb | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/vendor/plugins/rspec/examples/pure/stack.rb b/vendor/plugins/rspec/examples/pure/stack.rb new file mode 100644 index 000000000..407173f7b --- /dev/null +++ b/vendor/plugins/rspec/examples/pure/stack.rb @@ -0,0 +1,36 @@ +class StackUnderflowError < RuntimeError +end + +class StackOverflowError < RuntimeError +end + +class Stack + + def initialize + @items = [] + end + + def push object + raise StackOverflowError if @items.length == 10 + @items.push object + end + + def pop + raise StackUnderflowError if @items.empty? + @items.delete @items.last + end + + def peek + raise StackUnderflowError if @items.empty? + @items.last + end + + def empty? + @items.empty? + end + + def full? + @items.length == 10 + end + +end |