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Polish queue list solution

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This commit is contained in:
Donne Martin 2016-02-21 16:21:05 -05:00
parent 76da9ec98d
commit 7222f71f59
2 changed files with 11 additions and 17 deletions
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7
stacks_queues/queue_list/queue_list.py
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@ -24,14 +24,11 @@ class Queue(object):
# Empty list # Empty list
if self.first is None and self.last is None: if self.first is None and self.last is None:
return None return None
# Remove only element from a one element list
elif self.first == self.last:
data = self.first.data data = self.first.data
# Remove only element from a one element list
if self.first == self.last:
self.first = None self.first = None
self.last = None self.last = None
return data
else: else:
data = self.first.data
self.first = self.first.next self.first = self.first.next
return data return data

17
stacks_queues/queue_list/queue_list_solution.ipynb
View File

@ -142,15 +142,12 @@
" # Empty list\n", " # Empty list\n",
" if self.first is None and self.last is None:\n", " if self.first is None and self.last is None:\n",
" return None\n", " return None\n",
"\n",
" # Remove only element from a one element list\n",
" elif self.first == self.last:\n",
" data = self.first.data\n", " data = self.first.data\n",
" # Remove only element from a one element list\n",
" if self.first == self.last:\n",
" self.first = None\n", " self.first = None\n",
" self.last = None\n", " self.last = None\n",
" return data\n",
" else:\n", " else:\n",
" data = self.first.data\n",
" self.first = self.first.next\n", " self.first = self.first.next\n",
" return data" " return data"
] ]
@ -289,21 +286,21 @@
], ],
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"file_extension": ".py", "file_extension": ".py",
"mimetype": "text/x-python", "mimetype": "text/x-python",
"name": "python", "name": "python",
"nbconvert_exporter": "python", "nbconvert_exporter": "python",
"pygments_lexer": "ipython2", "pygments_lexer": "ipython3",
"version": "2.7.10" "version": "3.4.3"
} }
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"nbformat": 4, "nbformat": 4,