Himanshu Mahajan's LeetCode Solutions

Welcome to my LeetCode solutions repository! Here, you'll find my solutions to various LeetCode problems, along with explanations and optimizations. Feel free to explore and learn from them.

About Me

I'm Himanshu Mahajan, a passionate software engineer who loves tackling challenging problems and continually learning and improving my skills. I enjoy solving algorithmic puzzles and LeetCode has been a fantastic platform for honing my problem-solving abilities.

You can find more about me and my journey on:

LinkedIn - Let's Connect!
LeetCode Profile - Follow my progress and see my solved questions on LeetCode!

Repository Structure

Each problem solution is organized into its own folder for clarity.
Within each folder, you'll find the solution code, along with any additional files or notes if applicable.
Solutions are implemented in C++.

How to Use

Navigate to the folder of the problem you're interested in.
Open the solution file (usually named solution.<ext>) to view the code.
Read through the code and accompanying comments to understand the solution approach.
Feel free to suggest improvements or optimizations by opening an issue or creating a pull request!

Contribution

Contributions are welcome! If you have a better solution, found a bug, or want to add more explanations, feel free to contribute.

Fork the repository.
Create your feature branch (git checkout -b feature/YourFeature).
Commit your changes (git commit -am 'Add some feature').
Push to the branch (git push origin feature/YourFeature).
Open a pull request.

Acknowledgements

I'd like to express my gratitude to the LeetCode community for providing such an amazing platform to sharpen our coding skills. Also, thanks to all the contributors and developers who continuously improve this repository.

Happy coding!

Name		Name	Last commit message	Last commit date
Latest commit History 2,758 Commits
1-two-sum		1-two-sum
1002-maximum-width-ramp		1002-maximum-width-ramp
1013-fibonacci-number		1013-fibonacci-number
1016-subarray-sums-divisible-by-k		1016-subarray-sums-divisible-by-k
1021-distribute-coins-in-binary-tree		1021-distribute-coins-in-binary-tree
1030-smallest-string-starting-from-leaf		1030-smallest-string-starting-from-leaf
1037-minimum-number-of-k-consecutive-bit-flips		1037-minimum-number-of-k-consecutive-bit-flips
1044-find-common-characters		1044-find-common-characters
1056-capacity-to-ship-packages-within-d-days		1056-capacity-to-ship-packages-within-d-days
1078-remove-outermost-parentheses		1078-remove-outermost-parentheses
1114-binary-search-tree-to-greater-sum-tree		1114-binary-search-tree-to-greater-sum-tree
1137-height-checker		1137-height-checker
1138-grumpy-bookstore-owner		1138-grumpy-bookstore-owner
118-pascals-triangle		118-pascals-triangle
119-pascals-triangle-ii		119-pascals-triangle-ii
1196-filling-bookcase-shelves		1196-filling-bookcase-shelves
1197-parsing-a-boolean-expression		1197-parsing-a-boolean-expression
1207-delete-nodes-and-return-forest		1207-delete-nodes-and-return-forest
121-best-time-to-buy-and-sell-stock		121-best-time-to-buy-and-sell-stock
1217-relative-sort-array		1217-relative-sort-array
1224-minimum-falling-path-sum-ii		1224-minimum-falling-path-sum-ii
1236-n-th-tribonacci-number		1236-n-th-tribonacci-number
1240-stone-game-ii		1240-stone-game-ii
125-valid-palindrome		125-valid-palindrome
1256-rank-transform-of-an-array		1256-rank-transform-of-an-array
128-longest-consecutive-sequence		128-longest-consecutive-sequence
1285-balance-a-binary-search-tree		1285-balance-a-binary-search-tree
129-sum-root-to-leaf-numbers		129-sum-root-to-leaf-numbers
1293-three-consecutive-odds		1293-three-consecutive-odds
1298-reverse-substrings-between-each-pair-of-parentheses		1298-reverse-substrings-between-each-pair-of-parentheses
13-roman-to-integer		13-roman-to-integer
1302-delete-characters-to-make-fancy-string		1302-delete-characters-to-make-fancy-string
1304-longest-happy-string		1304-longest-happy-string
131-palindrome-partitioning		131-palindrome-partitioning
1321-get-equal-substrings-within-budget		1321-get-equal-substrings-within-budget
1325-path-with-maximum-probability		1325-path-with-maximum-probability
1331-path-with-maximum-gold		1331-path-with-maximum-gold
1333-sort-the-jumbled-numbers		1333-sort-the-jumbled-numbers
1350-remove-sub-folders-from-the-filesystem		1350-remove-sub-folders-from-the-filesystem
136-single-number		136-single-number
137-single-number-ii		137-single-number-ii
1370-count-number-of-nice-subarrays		1370-count-number-of-nice-subarrays
1371-minimum-remove-to-make-valid-parentheses		1371-minimum-remove-to-make-valid-parentheses
138-copy-list-with-random-pointer		138-copy-list-with-random-pointer
1381-maximum-score-words-formed-by-letters		1381-maximum-score-words-formed-by-letters
14-longest-common-prefix		14-longest-common-prefix
140-word-break-ii		140-word-break-ii
1402-count-square-submatrices-with-all-ones		1402-count-square-submatrices-with-all-ones
1408-find-the-smallest-divisor-given-a-threshold		1408-find-the-smallest-divisor-given-a-threshold
141-linked-list-cycle		141-linked-list-cycle
142-linked-list-cycle-ii		142-linked-list-cycle-ii
1431-all-ancestors-of-a-node-in-a-directed-acyclic-graph		1431-all-ancestors-of-a-node-in-a-directed-acyclic-graph
1435-xor-queries-of-a-subarray		1435-xor-queries-of-a-subarray
145-binary-tree-postorder-traversal		145-binary-tree-postorder-traversal
1450-delete-leaves-with-a-given-value		1450-delete-leaves-with-a-given-value
1456-find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance		1456-find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance
1473-find-the-longest-substring-containing-vowels-in-even-counts		1473-find-the-longest-substring-containing-vowels-in-even-counts
148-sort-list		148-sort-list
1484-linked-list-in-binary-tree		1484-linked-list-in-binary-tree
1496-lucky-numbers-in-a-matrix		1496-lucky-numbers-in-a-matrix
1497-design-a-stack-with-increment-operation		1497-design-a-stack-with-increment-operation
15-3sum		15-3sum
151-reverse-words-in-a-string		151-reverse-words-in-a-string
1511-count-number-of-teams		1511-count-number-of-teams
152-maximum-product-subarray		152-maximum-product-subarray
1520-number-of-steps-to-reduce-a-number-in-binary-representation-to-one		1520-number-of-steps-to-reduce-a-number-in-binary-representation-to-one
1528-kids-with-the-greatest-number-of-candies		1528-kids-with-the-greatest-number-of-candies
153-find-minimum-in-rotated-sorted-array		153-find-minimum-in-rotated-sorted-array
1538-maximum-points-you-can-obtain-from-cards		1538-maximum-points-you-can-obtain-from-cards
154-find-minimum-in-rotated-sorted-array-ii		154-find-minimum-in-rotated-sorted-array-ii
1549-longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit		1549-longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit
155-min-stack		155-min-stack
1553-count-triplets-that-can-form-two-arrays-of-equal-xor		1553-count-triplets-that-can-form-two-arrays-of-equal-xor
1556-make-two-arrays-equal-by-reversing-subarrays		1556-make-two-arrays-equal-by-reversing-subarrays
1570-final-prices-with-a-special-discount-in-a-shop		1570-final-prices-with-a-special-discount-in-a-shop
1574-maximum-product-of-two-elements-in-an-array		1574-maximum-product-of-two-elements-in-an-array
1580-shuffle-the-array		1580-shuffle-the-array
1585-the-kth-factor-of-n		1585-the-kth-factor-of-n
16-3sum-closest		16-3sum-closest
160-intersection-of-two-linked-lists		160-intersection-of-two-linked-lists
1603-running-sum-of-1d-array		1603-running-sum-of-1d-array
1605-minimum-number-of-days-to-make-m-bouquets		1605-minimum-number-of-days-to-make-m-bouquets
1610-xor-operation-in-an-array		1610-xor-operation-in-an-array
1615-range-sum-of-sorted-subarray-sums		1615-range-sum-of-sorted-subarray-sums
1616-minimum-difference-between-largest-and-smallest-value-in-three-moves		1616-minimum-difference-between-largest-and-smallest-value-in-three-moves
162-find-peak-element		162-find-peak-element
1620-check-if-array-pairs-are-divisible-by-k		1620-check-if-array-pairs-are-divisible-by-k
1635-number-of-good-pairs		1635-number-of-good-pairs
1642-water-bottles		1642-water-bottles
1646-kth-missing-positive-number		1646-kth-missing-positive-number
165-compare-version-numbers		165-compare-version-numbers
1653-number-of-good-leaf-nodes-pairs		1653-number-of-good-leaf-nodes-pairs
1666-make-the-string-great		1666-make-the-string-great
1667-find-kth-bit-in-nth-binary-string		1667-find-kth-bit-in-nth-binary-string
167-two-sum-ii-input-array-is-sorted		167-two-sum-ii-input-array-is-sorted
1675-magnetic-force-between-two-balls		1675-magnetic-force-between-two-balls
169-majority-element		169-majority-element
1691-minimum-number-of-days-to-disconnect-island		1691-minimum-number-of-days-to-disconnect-island
1694-make-sum-divisible-by-p		1694-make-sum-divisible-by-p
17-letter-combinations-of-a-phone-number		17-letter-combinations-of-a-phone-number

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