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Why does the Python heapq _siftup(...) call _siftdown(...) at the end?
The code for_siftup at github - python/cpython/Lib/heapq.py has a final call to _siftdown:
def _siftup(heap, pos):
endpos = len(heap)
startpos = pos
newitem = heap[pos]
# Bubble up th...
aksg87
Votes: 0
Answers: 1
Python heapq providing unexpected output
I have a simple python script that aims to read all rows in a csv file and perform a heap sort based on the second element of each row.
Here is my function to read the file:
def read Processes():
...
Ben Gagnon
Votes: 0
Answers: 1
maxHeap python converts to min heap after poping element
Trying to understand the max heap in python. Once I pop the element the elements are arranged as min heap.
import heapq
a=[3,2,1,4,9]
heapq._heapify_max(a) # This createa a binary tree with max val...
Harsha Vardhan
Votes: 0
Answers: 1
Interviewbit - Merge k sorted linked lists: heappop returns max element instead of min
I'm solving the Interviewbit code challenge Merge K Sorted Lists:
Merge k sorted linked lists and return it as one sorted list.
Example :
1 -> 10 -> 20
4 -> 11 -> 13
3 -> 8 -> 9
wi...
K2G
Votes: 0
Answers: 1