Created
August 28, 2016 01:44
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class LinkedListNode | |
attr_accessor :value, :next_node | |
def initialize(value, next_node=nil) | |
@value = value | |
@next_node = next_node | |
end | |
def print_values(list_node) | |
if list_node | |
print "#{list_node.value} --> " | |
print_values(list_node.next_node) | |
else | |
print "nil\n" | |
return | |
end | |
end | |
def reverse_list(list, previous=nil) | |
while list | |
old_next_node = list.next_node | |
list.next_node = previous | |
previous = list | |
list = old_next_node | |
end | |
previous | |
previous.print_values(previous) | |
end | |
end | |
node1 = LinkedListNode.new(37) | |
node2 = LinkedListNode.new(99, node1) | |
node3 = LinkedListNode.new(12, node2) | |
node3.print_values(node3) | |
node3.reverse_list(node3) | |
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