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added merge interval problem on the array data structure #14009
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added merge interval problem on the array data structure #14009
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for more information, see https://pre-commit.ci
Updated type hints from List to built-in list for compatibility.
@shivaganesht
shivaganesht
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Excellent contribution! The Merge Intervals solution is well-implemented and addresses a classic interview problem effectively.
Strengths:
- Clear type hints with list[list[int]] specification
- Good documentation explaining the algorithm approach
- Handles edge cases properly
- Time complexity O(n log n) due to sorting is optimal
Code quality:
- Function signature is clear and type-safe
- Comments explain the merging logic well
- Variable names are descriptive
Suggestion: Consider adding a docstring with:n- Example usage
- Time and space complexity analysis
- Edge cases handled
This is a solid addition to the arrays collection!
Added edge cases handling and updated complexity notes.
for more information, see https://pre-commit.ci
Updated type hints and docstring formatting in merge_intervals function.
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Click here to look at the relevant links ⬇️
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An error occurred while parsing the file: data_structures/arrays/merge_intervals.py
Traceback (most recent call last): File "/opt/render/project/src/algorithms_keeper/parser/python_parser.py", line 146, in parse reports = lint_file( ^^^^^^^^^^ libcst._exceptions.ParserSyntaxError: Syntax Error @ 42:5. parser error: error at 41:4: expected one of (, *, +, -, ..., AWAIT, DEDENT, False, NAME, NUMBER, None, True, [, break, continue, lambda, match, not, pass, ~ return [] ^
Updated docstring formatting and improved error message clarity.
for more information, see https://pre-commit.ci
gokul000410
commented
Dec 15, 2025
Excellent contribution! The Merge Intervals solution is well-implemented and addresses a classic interview problem effectively.
Strengths:
- Clear type hints with list[list[int]] specification
- Good documentation explaining the algorithm approach
- Handles edge cases properly
- Time complexity O(n log n) due to sorting is optimal
Code quality:
- Function signature is clear and type-safe
- Comments explain the merging logic well
- Variable names are descriptive
Suggestion: Consider adding a docstring with:n- Example usage
- Time and space complexity analysis
- Edge cases handled
This is a solid addition to the arrays collection!
Thank you for the suggestion! I have updated the merge_intervals function as follows:
- Added input validation to raise ValueError for invalid intervals (e.g., [[]])
- Handled edge cases: empty list, single interval, fully overlapping intervals
- Enhanced docstring with detailed explanation, examples, and time/space complexity
Please let me know if any further changes are needed.
This project/file contains a solution to the Merge Intervals problem, a common coding interview problem.
Problem Statement:
Given a collection of intervals, merge all overlapping intervals and return a list of non-overlapping intervals that cover all the intervals in the input.
Example:
Input: [[1,3],[2,6],[8,10],[15,18]]
Output: [[1,6],[8,10],[15,18]]
Key Points:
Handles overlapping intervals efficiently.
Time Complexity: O(n log n) due to sorting.
Space Complexity: O(n) for storing the merged intervals.
Usage:
The solution can be directly tested with custom interval inputs.
Ideal for practice in coding interviews and algorithm learning.