HeapSort

# Heap Sort in python


  def heapify(arr, n, i):
      # Find largest among root and children
      largest = i
      l = 2 * i + 1
      r = 2 * i + 2
  
      if l < n and arr[i] < arr[l]:
          largest = l
  
      if r < n and arr[largest] < arr[r]:
          largest = r
  
      # If root is not largest, swap with largest and continue heapifying
      if largest != i:
          arr[i], arr[largest] = arr[largest], arr[i]
          heapify(arr, n, largest)
  
  
  def heapSort(arr):
      n = len(arr)
  
      # Build max heap
      for i in range(n//2, -1, -1):
          heapify(arr, n, i)
  
      for i in range(n-1, 0, -1):
          # Swap
          arr[i], arr[0] = arr[0], arr[i]
  
          # Heapify root element
          heapify(arr, i, 0)
  
  
  arr = [1, 12, 9, 5, 6, 10]
  heapSort(arr)
  n = len(arr)
  print("Sorted array is")
  for i in range(n):
      print("%d " % arr[i], end='')

Source: programiz.com

Heap sort name meaning

A sorting algorithm that works by first organizing the data to be sorted into a special type of binary tree called a heap. The heap itself has, by definition, the largest value at the top of the tree.

-1

Similar codes

1 vote320 views1 answer
How to display speechmarks in python string
Python
0 vote362 views1 answer
Django optional path parameter
Python
10 votes362 views1 answer
Https://docs.djangoproject.com/en/2.0/howto/static-files/
Python
-2 votes321 views2 answers
How to find eigenvalues in python
Python
0 vote342 views1 answer
Basic asyncio syntax
Python
0 vote349 views1 answer
3d array
Python
32 votes380 views4 answers
Python check if list contains value
Python
3 votes346 views2 answers
How to create a network scanner in python
Python
0 vote360 views1 answer
Python mettre en minuscule
Python
1 vote404 views1 answer
Encode labels in scikit learn
Python