📘 LeetCode Solutions

This repository contains my personal solutions to a wide range of LeetCode problems, solved mainly using C++ (with some JavaScript where applicable).
The purpose of this repository is to practice data structures and algorithms, improve problem-solving skills, and track performance over time.

Most solutions are automatically synchronized using LeetSync, which preserves submission history, runtime, and memory usage.

🧠 Topics Covered

The problems in this repository cover multiple algorithmic concepts, including:

Arrays & Strings
Hash Tables
Two Pointers
Sorting & Binary Search
Stack & Queue
Greedy Algorithms
Dynamic Programming
Trees & Binary Trees
Graphs (BFS / DFS)
Bit Manipulation
Math & Number Theory

📂 Repository Structure

Each problem is organized in its own directory using the following format:

problem-number-problem-name/ │── solution file(s) │── README.md (optional explanation)

Example:

1-two-sum/ 20-valid-parentheses/ 70-climbing-stairs/ 347-top-k-frequent-elements/

Folder names follow the official LeetCode problem numbering for easy navigation.

⚙️ Performance Tracking

For many problems, the repository includes:

⏱ Runtime performance (milliseconds and percentile)
💾 Memory usage (megabytes and percentile)
🕒 Submission date

This helps evaluate efficiency and compare different solutions.

🎯 Purpose

Strengthen algorithm and data structure knowledge
Prepare for technical interviews
Maintain a clean archive of solved problems
Track progress and optimization improvements

🚀 Future Plans

Add detailed explanations for complex problems
Include optimized and alternative solutions
Organize problems by difficulty (Easy / Medium / Hard)

🔗 References

LeetCode
https://leetcode.com
LeetSync
https://github.com/LeetSync/LeetSync
LeetCode Problem Set
https://leetcode.com/problemset/all/

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Repository files navigation

📘 LeetCode Solutions

🧠 Topics Covered

📂 Repository Structure

⚙️ Performance Tracking

🎯 Purpose

🚀 Future Plans

🔗 References

About

Uh oh!

Releases

Packages

Uh oh!

Contributors

Uh oh!

Languages

Name		Name	Last commit message	Last commit date
Latest commit History 302 Commits
1-two-sum		1-two-sum
1001-n-repeated-element-in-size-2n-array		1001-n-repeated-element-in-size-2n-array
1018-largest-perimeter-triangle		1018-largest-perimeter-triangle
1019-squares-of-a-sorted-array		1019-squares-of-a-sorted-array
1093-recover-a-tree-from-preorder-traversal		1093-recover-a-tree-from-preorder-traversal
11-container-with-most-water		11-container-with-most-water
110-balanced-binary-tree		110-balanced-binary-tree
1116-maximum-level-sum-of-a-binary-tree		1116-maximum-level-sum-of-a-binary-tree
1160-letter-tile-possibilities		1160-letter-tile-possibilities
120-triangle		120-triangle
1264-maximum-number-of-words-you-can-type		1264-maximum-number-of-words-you-can-type
1284-four-divisors		1284-four-divisors
13-roman-to-integer		13-roman-to-integer
1304. Find N Unique Integers Sum up to Zero		1304. Find N Unique Integers Sum up to Zero
1306-minimum-absolute-difference		1306-minimum-absolute-difference
1335-maximum-candies-allocated-to-k-children		1335-maximum-candies-allocated-to-k-children
1353-find-resultant-array-after-removing-anagrams		1353-find-resultant-array-after-removing-anagrams
1364-tuple-with-same-product		1364-tuple-with-same-product
1387-find-elements-in-a-contaminated-binary-tree		1387-find-elements-in-a-contaminated-binary-tree
1396-count-servers-that-communicate		1396-count-servers-that-communicate
14-longest-common-prefix		14-longest-common-prefix
1406-subtract-the-product-and-sum-of-digits-of-an-integer		1406-subtract-the-product-and-sum-of-digits-of-an-integer
1460-number-of-substrings-containing-all-three-characters		1460-number-of-substrings-containing-all-three-characters
1477-product-of-the-last-k-numbers		1477-product-of-the-last-k-numbers
1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid		1485-minimum-cost-to-make-at-least-one-valid-path-in-a-grid
1527-number-of-ways-to-paint-n-3-grid		1527-number-of-ways-to-paint-n-3-grid
1558-course-schedule-iv		1558-course-schedule-iv
1569-max-dot-product-of-two-subsequences		1569-max-dot-product-of-two-subsequences
1610-xor-operation-in-an-array		1610-xor-operation-in-an-array
1612-avoid-flood-in-the-city		1612-avoid-flood-in-the-city
1631-number-of-sub-arrays-with-odd-sum		1631-number-of-sub-arrays-with-odd-sum
1642-water-bottles		1642-water-bottles
1646-kth-missing-positive-number		1646-kth-missing-positive-number
165-compare-version-numbers		165-compare-version-numbers
166-fraction-to-recurring-decimal		166-fraction-to-recurring-decimal
167-two-sum-ii-input-array-is-sorted		167-two-sum-ii-input-array-is-sorted
169-majority-element		169-majority-element
1724-customer-who-visited-but-did-not-make-any-transactions		1724-customer-who-visited-but-did-not-make-any-transactions
1756-minimum-deletions-to-make-string-balanced		1756-minimum-deletions-to-make-string-balanced
1791-richest-customer-wealth		1791-richest-customer-wealth
1817-calculate-money-in-leetcode-bank		1817-calculate-money-in-leetcode-bank
1849-maximum-absolute-sum-of-any-subarray		1849-maximum-absolute-sum-of-any-subarray
1876-map-of-highest-peak		1876-map-of-highest-peak
1878-check-if-array-is-sorted-and-rotated		1878-check-if-array-is-sorted-and-rotated
1889-check-if-number-is-a-sum-of-powers-of-three		1889-check-if-number-is-a-sum-of-powers-of-three
1894-merge-strings-alternately		1894-merge-strings-alternately
1915-check-if-one-string-swap-can-make-strings-equal		1915-check-if-one-string-swap-can-make-strings-equal
1950-sign-of-the-product-of-an-array		1950-sign-of-the-product-of-an-array
1960-check-if-the-sentence-is-pangram		1960-check-if-the-sentence-is-pangram
20-valid-parentheses		20-valid-parentheses
2021-remove-all-occurrences-of-a-substring		2021-remove-all-occurrences-of-a-substring
2089-maximum-matrix-sum		2089-maximum-matrix-sum
2107-find-unique-binary-string		2107-find-unique-binary-string
2145-grid-game		2145-grid-game
217-contains-duplicate		217-contains-duplicate
2174-next-greater-numerically-balanced-number		2174-next-greater-numerically-balanced-number
2219-maximum-number-of-words-found-in-sentences		2219-maximum-number-of-words-found-in-sentences
2231-find-first-palindromic-string-in-the-array		2231-find-first-palindromic-string-in-the-array
2246-maximum-employees-to-be-invited-to-a-meeting		2246-maximum-employees-to-be-invited-to-a-meeting
2324-find-triangular-sum-of-an-array		2324-find-triangular-sum-of-an-array
2392-successful-pairs-of-spells-and-potions		2392-successful-pairs-of-spells-and-potions
242-valid-anagram		242-valid-anagram
2448-count-number-of-bad-pairs		2448-count-number-of-bad-pairs
2463-minimum-recolors-to-get-k-consecutive-black-blocks		2463-minimum-recolors-to-get-k-consecutive-black-blocks
2473-max-sum-of-a-pair-with-equal-sum-of-digits		2473-max-sum-of-a-pair-with-equal-sum-of-digits
2481-strictly-palindromic-number		2481-strictly-palindromic-number
2509-minimize-xor		2509-minimize-xor
2533-bitwise-xor-of-all-pairings		2533-bitwise-xor-of-all-pairings
2564-most-profitable-path-in-a-tree		2564-most-profitable-path-in-a-tree
258-add-digits		258-add-digits
2583-divide-nodes-into-the-maximum-number-of-groups		2583-divide-nodes-into-the-maximum-number-of-groups
26-remove-duplicates-from-sorted-array		26-remove-duplicates-from-sorted-array
2608-count-the-digits-that-divide-a-number		2608-count-the-digits-that-divide-a-number
2614-maximum-count-of-positive-integer-and-negative-integer		2614-maximum-count-of-positive-integer-and-negative-integer
2624-difference-between-element-sum-and-digit-sum-of-an-array		2624-difference-between-element-sum-and-digit-sum-of-an-array
2649-count-total-number-of-colored-cells		2649-count-total-number-of-colored-cells
2685-first-completely-painted-row-or-column		2685-first-completely-painted-row-or-column
2690-house-robber-iv		2690-house-robber-iv
27-remove-element		27-remove-element
2734-array-prototype-last		2734-array-prototype-last
2752-sum-multiples		2752-sum-multiples
2761-array-reduce-transformation		2761-array-reduce-transformation
2764-maximum-number-of-fish-in-a-grid		2764-maximum-number-of-fish-in-a-grid
2766-find-the-prefix-common-array-of-two-arrays		2766-find-the-prefix-common-array-of-two-arrays
2789-counter-ii		2789-counter-ii
2792-neighboring-bitwise-xor		2792-neighboring-bitwise-xor
28-find-the-index-of-the-first-occurrence-in-a-string		28-find-the-index-of-the-first-occurrence-in-a-string
2812-find-the-maximum-achievable-number		2812-find-the-maximum-achievable-number
2876-number-of-employees-who-met-the-target		2876-number-of-employees-who-met-the-target
2998-count-symmetric-integers		2998-count-symmetric-integers
3172-divisible-and-non-divisible-sums-difference		3172-divisible-and-non-divisible-sums-difference
3194-find-words-containing-character		3194-find-words-containing-character
3219-make-lexicographically-smallest-array-by-swapping-elements		3219-make-lexicographically-smallest-array-by-swapping-elements
3226-minimum-number-game		3226-minimum-number-game
3242-count-elements-with-maximum-frequency		3242-count-elements-with-maximum-frequency
3260-divide-an-array-into-subarrays-with-minimum-cost-ii		3260-divide-an-array-into-subarrays-with-minimum-cost-ii
3312-number-of-changing-keys		3312-number-of-changing-keys
3332-minimum-operations-to-exceed-threshold-value-ii		3332-minimum-operations-to-exceed-threshold-value-ii
3336-water-bottles-ii		3336-water-bottles-ii
3372-longest-strictly-increasing-or-strictly-decreasing-subarray		3372-longest-strictly-increasing-or-strictly-decreasing-subarray

Folders and files

Latest commit

History

Repository files navigation

📘 LeetCode Solutions

🧠 Topics Covered

📂 Repository Structure

⚙️ Performance Tracking

🎯 Purpose

🚀 Future Plans

🔗 References

About

Topics

Resources

Uh oh!

Stars

Watchers

Forks

Releases

Packages 0

Uh oh!

Contributors

Uh oh!

Languages

Packages