Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

Sign up
Appearance settings

Commit 54aa73f

Browse files
KprafulMaximSmolskiy
andauthored
Fixes bugs in graphs/dijkstra_algorithm.py (#10092)
* Fixes bug in PriorityQueue Algorithm; Fixes syntax in code for array. * Update dijkstra_algorithm.py * Update dijkstra_algorithm.py * Update dijkstra_algorithm.py * Update dijkstra_algorithm.py --------- Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>
1 parent 84f101c commit 54aa73f

File tree

1 file changed

+7
-19
lines changed

1 file changed

+7
-19
lines changed

‎graphs/dijkstra_algorithm.py

Lines changed: 7 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -52,45 +52,33 @@ def min_heapify(self, idx):
5252
5353
>>> priority_queue_test.array = [(5, 'A'), (10, 'B'), (15, 'C')]
5454
>>> priority_queue_test.min_heapify(0)
55-
Traceback (most recent call last):
56-
...
57-
TypeError: 'list' object is not callable
5855
>>> priority_queue_test.array
5956
[(5, 'A'), (10, 'B'), (15, 'C')]
6057
6158
>>> priority_queue_test.array = [(10, 'A'), (5, 'B'), (15, 'C')]
6259
>>> priority_queue_test.min_heapify(0)
63-
Traceback (most recent call last):
64-
...
65-
TypeError: 'list' object is not callable
6660
>>> priority_queue_test.array
67-
[(10, 'A'), (5, 'B'), (15, 'C')]
61+
[(5, 'B'), (10, 'A'), (15, 'C')]
6862
6963
>>> priority_queue_test.array = [(10, 'A'), (15, 'B'), (5, 'C')]
7064
>>> priority_queue_test.min_heapify(0)
71-
Traceback (most recent call last):
72-
...
73-
TypeError: 'list' object is not callable
7465
>>> priority_queue_test.array
75-
[(10, 'A'), (15, 'B'), (5, 'C')]
66+
[(5, 'C'), (15, 'B'), (10, 'A')]
7667
7768
>>> priority_queue_test.array = [(10, 'A'), (5, 'B')]
7869
>>> priority_queue_test.cur_size = len(priority_queue_test.array)
7970
>>> priority_queue_test.pos = {'A': 0, 'B': 1}
8071
>>> priority_queue_test.min_heapify(0)
81-
Traceback (most recent call last):
82-
...
83-
TypeError: 'list' object is not callable
8472
>>> priority_queue_test.array
85-
[(10, 'A'), (5, 'B')]
73+
[(5, 'B'), (10, 'A')]
8674
"""
8775
lc = self.left(idx)
8876
rc = self.right(idx)
89-
if lc < self.cur_size and self.array(lc)[0] < self.array[idx][0]:
77+
if lc < self.cur_size and self.array[lc][0] < self.array[idx][0]:
9078
smallest = lc
9179
else:
9280
smallest = idx
93-
if rc < self.cur_size and self.array(rc)[0] < self.array[smallest][0]:
81+
if rc < self.cur_size and self.array[rc][0] < self.array[smallest][0]:
9482
smallest = rc
9583
if smallest != idx:
9684
self.swap(idx, smallest)
@@ -130,12 +118,12 @@ def extract_min(self):
130118
>>> priority_queue_test.extract_min()
131119
'C'
132120
>>> priority_queue_test.array[0]
133-
(15, 'B')
121+
(10, 'A')
134122
"""
135123
min_node = self.array[0][1]
136124
self.array[0] = self.array[self.cur_size - 1]
137125
self.cur_size -= 1
138-
self.min_heapify(1)
126+
self.min_heapify(0)
139127
del self.pos[min_node]
140128
return min_node
141129

0 commit comments

Comments
(0)

AltStyle によって変換されたページ (->オリジナル) /