LeetCode Solutions

A curated collection of my **LeetCode** solutions in **Java**, focused on Data Structures, Algorithms, and coding interview preparation.

Tech Stack

Java
Data Structures & Algorithms

Repository Structure

leetcode-solutions/
├── Easy/
├── Medium/
├── Hard/
└── README.md

Goals

Solve LeetCode problems consistently.
Improve problem-solving and algorithmic thinking.
Prepare for software engineering interviews.

📚 Company-Wise DSA Sheets — Last-Minute Revision

These company-wise DSA sheets are useful for last-minute revision before coding rounds and placements. Reduce the last-minute hassle, stay calm, keep a clear mind, and give your best. You're gonna crush it!

🔗 Reference	📌 Description
🔗 Company-Wise DSA — Nishant Tiwari	Company-wise DSA problems for targeted revision
🔗 Company-Wise DSA — Hardeep Mty	Company-wise LeetCode/DSA problem collection

Connect on LeetCode Let's Solve Together

A real-time catalog of optimized LeetCode solutions automatically synchronized via LeetSync.

`SELECT * FROM WORLD; WHERE SOMEONE LIKES YOU;`

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Name		Name	Last commit message	Last commit date
Latest commit History 582 Commits
.github/ISSUE_TEMPLATE		.github/ISSUE_TEMPLATE
1-two-sum		1-two-sum
10-regular-expression-matching		10-regular-expression-matching
1013-fibonacci-number		1013-fibonacci-number
1018-largest-perimeter-triangle		1018-largest-perimeter-triangle
1019-squares-of-a-sorted-array		1019-squares-of-a-sorted-array
11-container-with-most-water		11-container-with-most-water
1137-height-checker		1137-height-checker
1168-duplicate-zeros		1168-duplicate-zeros
118-pascals-triangle		118-pascals-triangle
119-pascals-triangle-ii		119-pascals-triangle-ii
121-best-time-to-buy-and-sell-stock		121-best-time-to-buy-and-sell-stock
122-best-time-to-buy-and-sell-stock-ii		122-best-time-to-buy-and-sell-stock-ii
1231-replace-elements-with-greatest-element-on-right-side		1231-replace-elements-with-greatest-element-on-right-side
125-valid-palindrome		125-valid-palindrome
13-roman-to-integer		13-roman-to-integer
1349-check-if-it-is-a-straight-line		1349-check-if-it-is-a-straight-line
136-single-number		136-single-number
138-copy-list-with-random-pointer		138-copy-list-with-random-pointer
14-longest-common-prefix		14-longest-common-prefix
141-linked-list-cycle		141-linked-list-cycle
142-linked-list-cycle-ii		142-linked-list-cycle-ii
1421-find-numbers-with-even-number-of-digits		1421-find-numbers-with-even-number-of-digits
1468-check-if-n-and-its-double-exist		1468-check-if-n-and-its-double-exist
147-insertion-sort-list		147-insertion-sort-list
150-evaluate-reverse-polish-notation		150-evaluate-reverse-polish-notation
1522-stone-game-iii		1522-stone-game-iii
153-find-minimum-in-rotated-sorted-array		153-find-minimum-in-rotated-sorted-array
154-find-minimum-in-rotated-sorted-array-ii		154-find-minimum-in-rotated-sorted-array-ii
155-min-stack		155-min-stack
1574-maximum-product-of-two-elements-in-an-array		1574-maximum-product-of-two-elements-in-an-array
160-intersection-of-two-linked-lists		160-intersection-of-two-linked-lists
1603-running-sum-of-1d-array		1603-running-sum-of-1d-array
162-find-peak-element		162-find-peak-element
1646-kth-missing-positive-number		1646-kth-missing-positive-number
167-two-sum-ii-input-array-is-sorted		167-two-sum-ii-input-array-is-sorted
172-factorial-trailing-zeroes		172-factorial-trailing-zeroes
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
189-rotate-array		189-rotate-array
19-remove-nth-node-from-end-of-list		19-remove-nth-node-from-end-of-list
190-reverse-bits		190-reverse-bits
191-number-of-1-bits		191-number-of-1-bits
2-add-two-numbers		2-add-two-numbers
20-valid-parentheses		20-valid-parentheses
203-remove-linked-list-elements		203-remove-linked-list-elements
204-count-primes		204-count-primes
2058-concatenation-of-array		2058-concatenation-of-array
206-reverse-linked-list		206-reverse-linked-list
209-minimum-size-subarray-sum		209-minimum-size-subarray-sum
21-merge-two-sorted-lists		21-merge-two-sorted-lists
2106-find-greatest-common-divisor-of-array		2106-find-greatest-common-divisor-of-array
215-kth-largest-element-in-an-array		215-kth-largest-element-in-an-array
217-contains-duplicate		217-contains-duplicate
231-power-of-two		231-power-of-two
234-palindrome-linked-list		234-palindrome-linked-list
237-delete-node-in-a-linked-list		237-delete-node-in-a-linked-list
240-search-a-2d-matrix-ii		240-search-a-2d-matrix-ii
242-valid-anagram		242-valid-anagram
2552-maximum-sum-of-distinct-subarrays-with-length-k		2552-maximum-sum-of-distinct-subarrays-with-length-k
2575-minimum-cuts-to-divide-a-circle		2575-minimum-cuts-to-divide-a-circle
258-add-digits		258-add-digits
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
268-missing-number		268-missing-number
27-remove-element		27-remove-element
278-first-bad-version		278-first-bad-version
28-find-the-index-of-the-first-occurrence-in-a-string		28-find-the-index-of-the-first-occurrence-in-a-string
283-move-zeroes		283-move-zeroes
3-longest-substring-without-repeating-characters		3-longest-substring-without-repeating-characters
326-power-of-three		326-power-of-three
328-odd-even-linked-list		328-odd-even-linked-list
33-search-in-rotated-sorted-array		33-search-in-rotated-sorted-array
3349-maximum-length-substring-with-two-occurrences		3349-maximum-length-substring-with-two-occurrences
34-find-first-and-last-position-of-element-in-sorted-array		34-find-first-and-last-position-of-element-in-sorted-array
342-power-of-four		342-power-of-four
344-reverse-string		344-reverse-string
349-intersection-of-two-arrays		349-intersection-of-two-arrays
35-search-insert-position		35-search-insert-position
350-intersection-of-two-arrays-ii		350-intersection-of-two-arrays-ii
3561-remove-methods-from-project		3561-remove-methods-from-project
36-valid-sudoku		36-valid-sudoku
3626-smallest-divisible-digit-product-i		3626-smallest-divisible-digit-product-i
367-valid-perfect-square		367-valid-perfect-square
374-guess-number-higher-or-lower		374-guess-number-higher-or-lower
3859-maximum-product-of-two-digits		3859-maximum-product-of-two-digits
387-first-unique-character-in-a-string		387-first-unique-character-in-a-string
4-median-of-two-sorted-arrays		4-median-of-two-sorted-arrays
4107-find-missing-elements		4107-find-missing-elements
412-fizz-buzz		412-fizz-buzz
424-longest-repeating-character-replacement		424-longest-repeating-character-replacement
441-arranging-coins		441-arranging-coins
448-find-all-numbers-disappeared-in-an-array		448-find-all-numbers-disappeared-in-an-array
461-hamming-distance		461-hamming-distance
48-rotate-image		48-rotate-image
486-predict-the-winner		486-predict-the-winner
496-next-greater-element-i		496-next-greater-element-i
5-longest-palindromic-substring		5-longest-palindromic-substring
503-next-greater-element-ii		503-next-greater-element-ii
507-perfect-number		507-perfect-number

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📚 Company-Wise DSA Sheets — Last-Minute Revision

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SELECT * FROM WORLD; WHERE SOMEONE LIKES YOU;

⭐ You can help me by Donating

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