Python: Combine two given sorted lists using heapq module

Last update on April 23 2025 12:52:43 (UTC/GMT +8 hours)

20. Merge Two Sorted Lists

Write a Python program to combine two sorted lists using the heapq module.

Sample Solution:

Python Code:

from heapq import merge
nums1 = [1, 3, 5, 7, 9, 11]
nums2 = [0, 2, 4, 6, 8, 10]
print("Original sorted lists:")
print(nums1)
print(nums2)
print("\nAfter merging the said two sorted lists:")
print(list(merge(nums1, nums2)))

Sample Output:

Original sorted lists:
[1, 3, 5, 7, 9, 11]
[0, 2, 4, 6, 8, 10]

After merging the said two sorted lists:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to merge two sorted lists into one sorted list using heapq.merge and then print the merged result.
• Write a Python script to combine two sorted arrays using heapq.merge and verify the sorted order of the output.
• Write a Python function to merge two sorted lists with heapq and then compare the result with the manual merge algorithm.
• Write a Python program to use heapq.merge to merge two sorted lists and then output the merged list in a single line.

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• Python Heap Queue Algorithm Exercises Home ↩
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Python Code Editor:

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