DSA · Theory

How do you check if a given array represents a heap

Theory

613/810

How do you check if a given array represents a heap

How do you check if a given array represents a heap is a DSA idea you prove with next patient, not with a slogan.

For How do you check if a given array represents a heap, Big-O is in play. Don’t blame it until you have traced next patient.

Without How do you check if a given array represents a heap, a clinic gets messy and next patient is hard to trust.

How do you check if a given array represents a heap shows up in a clinic. Name next patient, not “a real-world scenario”.

How do you check if a given array represents a heap trap: min-heap vs max-heap mix-up. Kabir loses marks for that every viva.

How do you check if a given array represents a heap is not a lonely heading. Kabir ties it to next patient.

Close How do you check if a given array represents a heap with: “If I skip it, next patient goes wrong like this: min-heap vs max-heap mix-up.”

Diagram

  index →  0    1    2
  array → [10,  20,  30]

Exam tip

Say How do you check if a given array represents a heap in one breath, then heapify + extract, then min-heap vs max-heap mix-up.

Example

import heapq

def heap_sort(arr):
    h = arr[:]
    heapq.heapify(h)
    return [heapq.heappop(h) for _ in range(len(h))]

print(heap_sort([5, 1, 4, 2]))

How do you check if a given array represents a heap — heap sort uses a binary heap to repeatedly extract the minimum.

Short notes

DefHow do you check if a given array represents a heap — Kabir uses it for next patient in a clinic.
RuleHow do you check if a given array represents a heap → heapify + extract.
RememberHow do you check if a given array represents a heap + Big-O (a clinic).
UseHow do you check if a given array represents a heap in a clinic (next patient).
TrapHow do you check if a given array represents a heap — min-heap vs max-heap mix-up.
ExHow do you check if a given array represents a heap → next patient.

DSA · Theory

How do you check if a given array represents a heap

← All stacks

Theory

613/810

How do you check if a given array represents a heap

How do you check if a given array represents a heap is a DSA idea you prove with next patient, not with a slogan.

For How do you check if a given array represents a heap, Big-O is in play. Don’t blame it until you have traced next patient.

Without How do you check if a given array represents a heap, a clinic gets messy and next patient is hard to trust.

How do you check if a given array represents a heap shows up in a clinic. Name next patient, not “a real-world scenario”.

How do you check if a given array represents a heap trap: min-heap vs max-heap mix-up. Kabir loses marks for that every viva.

How do you check if a given array represents a heap is not a lonely heading. Kabir ties it to next patient.

Close How do you check if a given array represents a heap with: “If I skip it, next patient goes wrong like this: min-heap vs max-heap mix-up.”

Diagram

  index →  0    1    2
  array → [10,  20,  30]

Exam tip

Say How do you check if a given array represents a heap in one breath, then heapify + extract, then min-heap vs max-heap mix-up.

Example

import heapq

def heap_sort(arr):
    h = arr[:]
    heapq.heapify(h)
    return [heapq.heappop(h) for _ in range(len(h))]

print(heap_sort([5, 1, 4, 2]))

How do you check if a given array represents a heap — heap sort uses a binary heap to repeatedly extract the minimum.

Short notes

DefHow do you check if a given array represents a heap — Kabir uses it for next patient in a clinic.
RuleHow do you check if a given array represents a heap → heapify + extract.
RememberHow do you check if a given array represents a heap + Big-O (a clinic).
UseHow do you check if a given array represents a heap in a clinic (next patient).
TrapHow do you check if a given array represents a heap — min-heap vs max-heap mix-up.
ExHow do you check if a given array represents a heap → next patient.

How do you check if a given array represents a heap

Example

Short notes

Questions

How do you check if a given array represents a heap

Example

Short notes

Questions