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.github/workflows
.github/workflows
 
 
0001-two-sum
0001-two-sum
 
 
0003-longest-substring-without-repeating-characters
0003-longest-substring-without-repeating-characters
 
 
0004-median-of-two-sorted-arrays
0004-median-of-two-sorted-arrays
 
 
0005-longest-palindromic-substring
0005-longest-palindromic-substring
 
 
0006-zigzag-conversion
0006-zigzag-conversion
 
 
0007-reverse-integer
0007-reverse-integer
 
 
0009-palindrome-number
0009-palindrome-number
 
 
0014-longest-common-prefix
0014-longest-common-prefix
 
 
0015-3sum
0015-3sum
 
 
0016-3sum-closest
0016-3sum-closest
 
 
0017-letter-combinations-of-a-phone-number
0017-letter-combinations-of-a-phone-number
 
 
0020-valid-parentheses
0020-valid-parentheses
 
 
0024-swap-nodes-in-pairs
0024-swap-nodes-in-pairs
 
 
0026-remove-duplicates-from-sorted-array
0026-remove-duplicates-from-sorted-array
 
 
0027-remove-element
0027-remove-element
 
 
0028-find-the-index-of-the-first-occurrence-in-a-string
0028-find-the-index-of-the-first-occurrence-in-a-string
 
 
0031-next-permutation
0031-next-permutation
 
 
0032-longest-valid-parentheses
0032-longest-valid-parentheses
 
 
0035-search-insert-position
0035-search-insert-position
 
 
0036-valid-sudoku
0036-valid-sudoku
 
 
0039-combination-sum
0039-combination-sum
 
 
0040-combination-sum-ii
0040-combination-sum-ii
 
 
0042-trapping-rain-water
0042-trapping-rain-water
 
 
0045-jump-game-ii
0045-jump-game-ii
 
 
0049-group-anagrams
0049-group-anagrams
 
 
0053-maximum-subarray
0053-maximum-subarray
 
 
0054-spiral-matrix
0054-spiral-matrix
 
 
0056-merge-intervals
0056-merge-intervals
 
 
0063-unique-paths-ii
0063-unique-paths-ii
 
 
0064-minimum-path-sum
0064-minimum-path-sum
 
 
0066-plus-one
0066-plus-one
 
 
0067-add-binary
0067-add-binary
 
 
0070-climbing-stairs
0070-climbing-stairs
 
 
0071-simplify-path
0071-simplify-path
 
 
0074-search-a-2d-matrix
0074-search-a-2d-matrix
 
 
0077-combinations
0077-combinations
 
 
0078-subsets
0078-subsets
 
 
0079-word-search
0079-word-search
 
 
0086-partition-list
0086-partition-list
 
 
0088-merge-sorted-array
0088-merge-sorted-array
 
 
0091-decode-ways
0091-decode-ways
 
 
0093-restore-ip-addresses
0093-restore-ip-addresses
 
 
0094-binary-tree-inorder-traversal
0094-binary-tree-inorder-traversal
 
 
0100-same-tree
0100-same-tree
 
 
0103-binary-tree-zigzag-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
 
 
0104-maximum-depth-of-binary-tree
0104-maximum-depth-of-binary-tree
 
 
0110-balanced-binary-tree
0110-balanced-binary-tree
 
 
0121-best-time-to-buy-and-sell-stock
0121-best-time-to-buy-and-sell-stock
 
 
0125-valid-palindrome
0125-valid-palindrome
 
 
0128-longest-consecutive-sequence
0128-longest-consecutive-sequence
 
 
0131-palindrome-partitioning
0131-palindrome-partitioning
 
 
0134-gas-station
0134-gas-station
 
 
0139-word-break
0139-word-break
 
 
0141-linked-list-cycle
0141-linked-list-cycle
 
 
0144-binary-tree-preorder-traversal
0144-binary-tree-preorder-traversal
 
 
0146-lru-cache
0146-lru-cache
 
 
0149-max-points-on-a-line
0149-max-points-on-a-line
 
 
0160-intersection-of-two-linked-lists
0160-intersection-of-two-linked-lists
 
 
0175-combine-two-tables
0175-combine-two-tables
 
 
0182-duplicate-emails
0182-duplicate-emails
 
 
0183-customers-who-never-order
0183-customers-who-never-order
 
 
0189-rotate-array
0189-rotate-array
 
 
0191-number-of-1-bits
0191-number-of-1-bits
 
 
0196-delete-duplicate-emails
0196-delete-duplicate-emails
 
 
0206-reverse-linked-list
0206-reverse-linked-list
 
 
0215-kth-largest-element-in-an-array
0215-kth-largest-element-in-an-array
 
 
0225-implement-stack-using-queues
0225-implement-stack-using-queues
 
 
0226-invert-binary-tree
0226-invert-binary-tree
 
 
0231-power-of-two
0231-power-of-two
 
 
0242-valid-anagram
0242-valid-anagram
 
 
0258-add-digits
0258-add-digits
 
 
0263-ugly-number
0263-ugly-number
 
 
0283-move-zeroes
0283-move-zeroes
 
 
0287-find-the-duplicate-number
0287-find-the-duplicate-number
 
 
0300-longest-increasing-subsequence
0300-longest-increasing-subsequence
 
 
0319-bulb-switcher
0319-bulb-switcher
 
 
0344-reverse-string
0344-reverse-string
 
 
0347-top-k-frequent-elements
0347-top-k-frequent-elements
 
 
0352-data-stream-as-disjoint-intervals
0352-data-stream-as-disjoint-intervals
 
 
0387-first-unique-character-in-a-string
0387-first-unique-character-in-a-string
 
 
0389-find-the-difference
0389-find-the-difference
 
 
0390-elimination-game
0390-elimination-game
 
 
0399-evaluate-division
0399-evaluate-division
 
 
0416-partition-equal-subset-sum
0416-partition-equal-subset-sum
 
 
0427-construct-quad-tree
0427-construct-quad-tree
 
 
0443-string-compression
0443-string-compression
 
 
0448-find-all-numbers-disappeared-in-an-array
0448-find-all-numbers-disappeared-in-an-array
 
 
0451-sort-characters-by-frequency
0451-sort-characters-by-frequency
 
 
0452-minimum-number-of-arrows-to-burst-balloons
0452-minimum-number-of-arrows-to-burst-balloons
 
 
0460-lfu-cache
0460-lfu-cache
 
 
0472-concatenated-words
0472-concatenated-words
 
 
0491-non-decreasing-subsequences
0491-non-decreasing-subsequences
 
 
0496-next-greater-element-i
0496-next-greater-element-i
 
 
0501-find-mode-in-binary-search-tree
0501-find-mode-in-binary-search-tree
 
 
0502-ipo
0502-ipo
 
 
0515-find-largest-value-in-each-tree-row
0515-find-largest-value-in-each-tree-row
 
 
0525-contiguous-array
0525-contiguous-array
 
 
0540-single-element-in-a-sorted-array
0540-single-element-in-a-sorted-array
 
 
0542-01-matrix
0542-01-matrix
 
 

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Leecode-Problems

Collection of LeetCode questions to ace the coding interview! - Created using LeetHub

LeetCode Topics

Array
0039-combination-sum
0040-combination-sum-ii
0053-maximum-subarray
0078-subsets
0079-word-search
0121-best-time-to-buy-and-sell-stock
0128-longest-consecutive-sequence
0139-word-break
0399-evaluate-division
0416-partition-equal-subset-sum
0560-subarray-sum-equals-k
1014-k-closest-points-to-origin
1548-check-if-all-1s-are-at-least-length-k-places-away
1626-best-team-with-no-conflicts
2358-number-of-ways-to-split-array
2588-maximum-number-of-points-from-grid-queries
3640-trionic-array-ii
3719-longest-balanced-subarray-i

Backtracking
0017-letter-combinations-of-a-phone-number
0039-combination-sum
0040-combination-sum-ii
0078-subsets
0079-word-search

Bit Manipulation
0078-subsets
0231-power-of-two
0795-k-th-symbol-in-grammar

Math
0070-climbing-stairs
0231-power-of-two
0795-k-th-symbol-in-grammar
1014-k-closest-points-to-origin

Recursion
0231-power-of-two
0795-k-th-symbol-in-grammar

Hash Table
0017-letter-combinations-of-a-phone-number
0128-longest-consecutive-sequence
0139-word-break
0146-lru-cache
0560-subarray-sum-equals-k
2300-construct-string-with-repeat-limit
3719-longest-balanced-subarray-i

String
0017-letter-combinations-of-a-phone-number
0079-word-search
0091-decode-ways
0139-word-break
0399-evaluate-division
0647-palindromic-substrings
1250-longest-common-subsequence
2300-construct-string-with-repeat-limit
3617-find-the-original-typed-string-i

Depth-First Search
0079-word-search
0399-evaluate-division
0803-cheapest-flights-within-k-stops
0820-find-eventual-safe-states

Breadth-First Search
0399-evaluate-division
0803-cheapest-flights-within-k-stops
0820-find-eventual-safe-states
2583-divide-nodes-into-the-maximum-number-of-groups
2588-maximum-number-of-points-from-grid-queries

Graph
0399-evaluate-division
0803-cheapest-flights-within-k-stops
0820-find-eventual-safe-states
2583-divide-nodes-into-the-maximum-number-of-groups

Topological Sort
0820-find-eventual-safe-states

Divide and Conquer
0053-maximum-subarray
1014-k-closest-points-to-origin
3719-longest-balanced-subarray-i

Geometry
1014-k-closest-points-to-origin

Sorting
1014-k-closest-points-to-origin
1626-best-team-with-no-conflicts
2588-maximum-number-of-points-from-grid-queries

Heap (Priority Queue)
0803-cheapest-flights-within-k-stops
1014-k-closest-points-to-origin
2300-construct-string-with-repeat-limit
2588-maximum-number-of-points-from-grid-queries

Quickselect
1014-k-closest-points-to-origin

Greedy
2300-construct-string-with-repeat-limit

Counting
2300-construct-string-with-repeat-limit

Union Find
0399-evaluate-division
2583-divide-nodes-into-the-maximum-number-of-groups
2588-maximum-number-of-points-from-grid-queries

Shortest Path
0399-evaluate-division
0803-cheapest-flights-within-k-stops

Dynamic Programming
0053-maximum-subarray
0070-climbing-stairs
0091-decode-ways
0121-best-time-to-buy-and-sell-stock
0139-word-break
0416-partition-equal-subset-sum
0647-palindromic-substrings
0803-cheapest-flights-within-k-stops
1250-longest-common-subsequence
1626-best-team-with-no-conflicts
3640-trionic-array-ii

Memoization
0070-climbing-stairs
0139-word-break

Two Pointers
0647-palindromic-substrings
2588-maximum-number-of-points-from-grid-queries

Prefix Sum
0560-subarray-sum-equals-k
2358-number-of-ways-to-split-array
3719-longest-balanced-subarray-i

Trie
0139-word-break

Matrix
0079-word-search
2588-maximum-number-of-points-from-grid-queries

Linked List
0146-lru-cache

Design
0146-lru-cache
0901-online-stock-span

Doubly-Linked List
0146-lru-cache

Stack
0901-online-stock-span

Monotonic Stack
0901-online-stock-span

Data Stream
0901-online-stock-span

Union-Find
0128-longest-consecutive-sequence

Segment Tree
3719-longest-balanced-subarray-i

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Collection of LeetCode questions to ace the coding interview! - Created using [LeetHub](https://github.com/QasimWani/LeetHub)

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