Python: Delete the smallest element from the given Heap and then inserts a new item

Last update on April 01 2025 13:22:10 (UTC/GMT +8 hours)

5. Heap Update (Delete and Insert)

Write a Python program that deletes the smallest element from a heap and then inserts a new item.

Sample Solution:

Python Code:

import heapq as hq

heap = [25, 44, 68, 21, 39, 23, 89]
hq.heapify(heap)
print("heap: ", heap)
hq.heapreplace(heap, 21)
print("heapreplace(heap, 21): ", heap)
hq.heapreplace(heap, 110)
print("heapreplace(heap, 110): ", heap)

Sample Output:

heap:  [21, 25, 23, 44, 39, 68, 89]
heapreplace(heap, 21):  [21, 25, 23, 44, 39, 68, 89]
heapreplace(heap, 110):  [23, 25, 68, 44, 39, 110, 89]

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to delete the smallest element from a heap using heapq.heappop and then insert a new element using heapq.heappush, printing the heap before and after.
• Write a Python script to update a heap by removing the minimum element and then adding a new number, ensuring the heap property is maintained.
• Write a Python function to simulate a heap update by performing a delete-min followed by an insertion and then output the modified heap.
• Write a Python program to remove the smallest value from a heap, insert a new value, and then print both the removed element and the updated heap structure.

Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python function which accepts an arbitrary list and converts it to a heap using Heap queue algorithm.
Next: Write a Python program to sort a given list of elements in ascending order using Heap queue algorithm.