Python Coding challenge - Day 618| What is the output of the following Python Code?

 

Code Explanation:

 1. Importing the heapq Module

import heapq

The heapq module provides functions for heap (priority queue) operations.

It also includes heapq.merge(), which merges multiple sorted inputs into a single sorted iterator efficiently.

2. Defining the Function: merge_sorted()

def merge_sorted():

A function named merge_sorted is defined.

It doesn’t take any arguments and returns the merged result of two sorted lists.

3. Creating Two Sorted Lists

    a = [1, 3, 5]

    b = [2, 4, 6]

List a contains sorted odd numbers.

List b contains sorted even numbers.

Both are sorted in ascending order.

 4. Merging the Sorted Lists

    return heapq.merge(a, b)

heapq.merge(a, b) merges both already sorted lists into a sorted iterator.

Unlike a + b followed by sorted(), this does not load all data into memory.

It returns a lazy iterator, which yields the next smallest element on each iteration.

5. Printing the Merged Output

print(list(merge_sorted()))

The merged iterator is converted into a list using list(...), which triggers the iteration and collects all results.

print(...) displays the final sorted merged list.

Output:

[1, 2, 3, 4, 5, 6]

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