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79 lines
1.5 KiB
Ruby
79 lines
1.5 KiB
Ruby
class Node
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attr_accessor :value, :next
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def initialize(val, next_in_line)
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@value = val
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@next = next_in_line
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end
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end
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class LinkedList
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attr_accessor :head
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def initialize(val)
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# Initialize a new node at the head
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@head = Node.new(val, nil)
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end
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def add(value)
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# Traverse to the end of the list
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# And insert a new node over there with the specified value
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current = @head
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current = current.next until current.next.nil?
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current.next = Node.new(value, nil)
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self
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end
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def delete(val)
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current = @head
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if current.value == val
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@head = @head.next
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else
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until current.next.nil?
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current = current.next
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if current.value == val
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current.value = current.next.value || nil
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current.next = current.next.next
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end
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end
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end
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@head
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end
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end
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def print_list(temp)
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current = temp.head
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i = 1
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while current.next
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puts current.value.to_s
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current = current.next
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i += 1
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end
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puts current.value.to_s
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end
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def partition_linked_temp(list, n)
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return false unless list || n
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l_start = lower = Node.new(0, nil)
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g_start = greater = Node.new(0, nil)
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current = list.head
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while current
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temp = Node.new(current.value, nil)
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if current.value <= n
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lower.next = temp
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lower = lower.next
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else
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greater.next = temp
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greater = greater.next
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end
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current = current.next
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end
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current = l_start
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current = current.next while current.next
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current.next = g_start.next
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l_start.next
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end
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