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Implement an Out-of-Order Sort Buffer with a Heap in Python

Buffers out-of-order indices from a stream and emits them in sorted order using a min-heap with a sliding window.

import heapq
from collections import deque


class OutOfOrderSorter:
    def __init__(self, buffer_size):
        self.buffer_size = buffer_size
        self.buffer = deque(maxlen=buffer_size)
        self.heap = []
        self.next_expected_index = 0
        self.result = []

    def push(self, item):
        heapq.…

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