GitHub - Happy-Singh-Chauhan/LeetCode: 🧠 LeetCode Solutions | DSA Practice A collection of my solved LeetCode problems to strengthen Data Structures & Algorithms skills. Updated regularly with clean, well-structured code and problem statements — perfect for interview prep and revision.

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🧠 LeetCode Solutions | DSA Practice A collection of my solved LeetCode problems to strengthen Data Structures & Algorithms skills. Updated regularly with clean, well-structured code and problem statements — perfect for interview prep and revision.

leetcode.com/u/Happy-Singh-Chauhan/

arrays-and-strings backtracking binary-search dynamic-programming greedy-algorithm hashing linked-list recursion sliding-window stacks-and-queues two-pointers

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Name		Name	Last commit message	Last commit date
Latest commit History 1,505 Commits
100-same-tree		100-same-tree
1002-maximum-width-ramp		1002-maximum-width-ramp
101-symmetric-tree		101-symmetric-tree
102-binary-tree-level-order-traversal		102-binary-tree-level-order-traversal
1025-minimum-cost-for-tickets		1025-minimum-cost-for-tickets
103-binary-tree-zigzag-level-order-traversal		103-binary-tree-zigzag-level-order-traversal
1036-rotting-oranges		1036-rotting-oranges
1046-max-consecutive-ones-iii		1046-max-consecutive-ones-iii
1049-minimum-domino-rotations-for-equal-row		1049-minimum-domino-rotations-for-equal-row
105-construct-binary-tree-from-preorder-and-inorder-traversal		105-construct-binary-tree-from-preorder-and-inorder-traversal
1054-complement-of-base-10-integer		1054-complement-of-base-10-integer
1063-best-sightseeing-pair		1063-best-sightseeing-pair
107-binary-tree-level-order-traversal-ii		107-binary-tree-level-order-traversal-ii
1073-number-of-enclaves		1073-number-of-enclaves
1093-recover-a-tree-from-preorder-traversal		1093-recover-a-tree-from-preorder-traversal
11-container-with-most-water		11-container-with-most-water
112-path-sum		112-path-sum
1121-partition-array-for-maximum-sum		1121-partition-array-for-maximum-sum
1137-height-checker		1137-height-checker
114-flatten-binary-tree-to-linked-list		114-flatten-binary-tree-to-linked-list
115-distinct-subsequences		115-distinct-subsequences
116-populating-next-right-pointers-in-each-node		116-populating-next-right-pointers-in-each-node
1160-letter-tile-possibilities		1160-letter-tile-possibilities
1170-shortest-common-supersequence		1170-shortest-common-supersequence
12-integer-to-roman		12-integer-to-roman
120-triangle		120-triangle
1205-defanging-an-ip-address		1205-defanging-an-ip-address
121-best-time-to-buy-and-sell-stock		121-best-time-to-buy-and-sell-stock
1218-lowest-common-ancestor-of-deepest-leaves		1218-lowest-common-ancestor-of-deepest-leaves
122-best-time-to-buy-and-sell-stock-ii		122-best-time-to-buy-and-sell-stock-ii
1227-number-of-equivalent-domino-pairs		1227-number-of-equivalent-domino-pairs
123-best-time-to-buy-and-sell-stock-iii		123-best-time-to-buy-and-sell-stock-iii
1231-replace-elements-with-greatest-element-on-right-side		1231-replace-elements-with-greatest-element-on-right-side
1250-longest-common-subsequence		1250-longest-common-subsequence
1256-rank-transform-of-an-array		1256-rank-transform-of-an-array
127-word-ladder		127-word-ladder
129-sum-root-to-leaf-numbers		129-sum-root-to-leaf-numbers
1293-three-consecutive-odds		1293-three-consecutive-odds
13-roman-to-integer		13-roman-to-integer
130-surrounded-regions		130-surrounded-regions
1302-delete-characters-to-make-fancy-string		1302-delete-characters-to-make-fancy-string
1304-longest-happy-string		1304-longest-happy-string
1305-number-of-visible-people-in-a-queue		1305-number-of-visible-people-in-a-queue
131-palindrome-partitioning		131-palindrome-partitioning
1319-unique-number-of-occurrences		1319-unique-number-of-occurrences
132-palindrome-partitioning-ii		132-palindrome-partitioning-ii
1333-sort-the-jumbled-numbers		1333-sort-the-jumbled-numbers
1335-maximum-candies-allocated-to-k-children		1335-maximum-candies-allocated-to-k-children
135-candy		135-candy
1350-remove-sub-folders-from-the-filesystem		1350-remove-sub-folders-from-the-filesystem
1364-tuple-with-same-product		1364-tuple-with-same-product
137-single-number-ii		137-single-number-ii
1370-count-number-of-nice-subarrays		1370-count-number-of-nice-subarrays
1372-check-if-it-is-a-good-array		1372-check-if-it-is-a-good-array
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
1402-count-square-submatrices-with-all-ones		1402-count-square-submatrices-with-all-ones
141-linked-list-cycle		141-linked-list-cycle
1411-convert-binary-number-in-a-linked-list-to-integer		1411-convert-binary-number-in-a-linked-list-to-integer
1421-find-numbers-with-even-number-of-digits		1421-find-numbers-with-even-number-of-digits
1426-find-n-unique-integers-sum-up-to-zero		1426-find-n-unique-integers-sum-up-to-zero
143-reorder-list		143-reorder-list
1435-xor-queries-of-a-subarray		1435-xor-queries-of-a-subarray
1437-minimum-insertion-steps-to-make-a-string-palindrome		1437-minimum-insertion-steps-to-make-a-string-palindrome
1440-convert-integer-to-the-sum-of-two-no-zero-integers		1440-convert-integer-to-the-sum-of-two-no-zero-integers
1448-maximum-69-number		1448-maximum-69-number
1460-number-of-substrings-containing-all-three-characters		1460-number-of-substrings-containing-all-three-characters
1468-check-if-n-and-its-double-exist		1468-check-if-n-and-its-double-exist
1476-count-negative-numbers-in-a-sorted-matrix		1476-count-negative-numbers-in-a-sorted-matrix
1477-product-of-the-last-k-numbers		1477-product-of-the-last-k-numbers
1478-maximum-number-of-events-that-can-be-attended		1478-maximum-number-of-events-that-can-be-attended
148-sort-list		148-sort-list
1482-how-many-numbers-are-smaller-than-the-current-number		1482-how-many-numbers-are-smaller-than-the-current-number
1486-find-the-distance-value-between-two-arrays		1486-find-the-distance-value-between-two-arrays
1497-design-a-stack-with-increment-operation		1497-design-a-stack-with-increment-operation
15-3sum		15-3sum
1500-count-largest-group		1500-count-largest-group
1502-construct-k-palindrome-strings		1502-construct-k-palindrome-strings
1503-reducing-dishes		1503-reducing-dishes
1505-create-target-array-in-the-given-order		1505-create-target-array-in-the-given-order
1510-find-lucky-integer-in-an-array		1510-find-lucky-integer-in-an-array
1516-the-k-th-lexicographical-string-of-all-happy-strings-of-length-n		1516-the-k-th-lexicographical-string-of-all-happy-strings-of-length-n
1519-minimum-subsequence-in-non-increasing-order		1519-minimum-subsequence-in-non-increasing-order
1524-string-matching-in-an-array		1524-string-matching-in-an-array
1529-max-difference-you-can-get-from-changing-an-integer		1529-max-difference-you-can-get-from-changing-an-integer
1537-maximum-score-after-splitting-a-string		1537-maximum-score-after-splitting-a-string
1548-check-if-all-1s-are-at-least-length-k-places-away		1548-check-if-all-1s-are-at-least-length-k-places-away
1552-build-an-array-with-stack-operations		1552-build-an-array-with-stack-operations
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
1566-check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence		1566-check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence
1567-maximum-number-of-vowels-in-a-substring-of-given-length		1567-maximum-number-of-vowels-in-a-substring-of-given-length
1570-final-prices-with-a-special-discount-in-a-shop		1570-final-prices-with-a-special-discount-in-a-shop
1580-shuffle-the-array		1580-shuffle-the-array
1586-longest-subarray-of-1s-after-deleting-one-element		1586-longest-subarray-of-1s-after-deleting-one-element
1603-running-sum-of-1d-array		1603-running-sum-of-1d-array
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
1620-check-if-array-pairs-are-divisible-by-k		1620-check-if-array-pairs-are-divisible-by-k

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