LeetCode

Collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

String


0344-reverse-string
0409-longest-palindrome
0648-replace-words
1044-find-common-characters
3379-score-of-a-string

Two Pointers


0344-reverse-string
0633-sum-of-square-numbers
0853-most-profit-assigning-work

Hash Table


0409-longest-palindrome
0648-replace-words
1016-subarray-sums-divisible-by-k
1044-find-common-characters

Greedy


0409-longest-palindrome
0502-ipo
0853-most-profit-assigning-work

Array


0502-ipo
0648-replace-words
0853-most-profit-assigning-work
1016-subarray-sums-divisible-by-k
1044-find-common-characters
1137-height-checker
1605-minimum-number-of-days-to-make-m-bouquets

Trie


0648-replace-words

Prefix Sum


1016-subarray-sums-divisible-by-k

Sorting


0502-ipo
0853-most-profit-assigning-work
1137-height-checker

Counting Sort


1137-height-checker

Heap (Priority Queue)


0502-ipo

Math


0633-sum-of-square-numbers

Binary Search


0633-sum-of-square-numbers
0853-most-profit-assigning-work
1605-minimum-number-of-days-to-make-m-bouquets

LeetCode Topics

Array


0001-two-sum
0026-remove-duplicates-from-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0075-sort-colors
0189-rotate-array
0283-move-zeroes
0882-peak-index-in-a-mountain-array
1496-lucky-numbers-in-a-matrix
1621-number-of-subsequences-that-satisfy-the-given-sum-condition
1878-check-if-array-is-sorted-and-rotated
2292-counting-words-with-a-given-prefix
2726-minimum-reverse-operations

Matrix


1496-lucky-numbers-in-a-matrix

String


0003-longest-substring-without-repeating-characters
0957-minimum-add-to-make-parentheses-valid
1566-check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence
2292-counting-words-with-a-given-prefix
2377-check-if-number-has-equal-digit-count-and-digit-value
3174-minimum-number-of-changes-to-make-binary-string-beautiful

Stack


0234-palindrome-linked-list
0957-minimum-add-to-make-parentheses-valid

Greedy


0957-minimum-add-to-make-parentheses-valid

Hash Table


0001-two-sum
0003-longest-substring-without-repeating-characters
0142-linked-list-cycle-ii
0160-intersection-of-two-linked-lists
2377-check-if-number-has-equal-digit-count-and-digit-value

Breadth-First Search


2726-minimum-reverse-operations

Ordered Set


2726-minimum-reverse-operations

Binary Search


0034-find-first-and-last-position-of-element-in-sorted-array
0882-peak-index-in-a-mountain-array
1621-number-of-subsequences-that-satisfy-the-given-sum-condition

Two Pointers


0019-remove-nth-node-from-end-of-list
0026-remove-duplicates-from-sorted-array
0075-sort-colors
0142-linked-list-cycle-ii
0160-intersection-of-two-linked-lists
0189-rotate-array
0234-palindrome-linked-list
0283-move-zeroes
0908-middle-of-the-linked-list
1566-check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence
1621-number-of-subsequences-that-satisfy-the-given-sum-condition
2216-delete-the-middle-node-of-a-linked-list

Math


0007-reverse-integer
0009-palindrome-number
0050-powx-n
0189-rotate-array

Sliding Window


0003-longest-substring-without-repeating-characters

Linked List


0019-remove-nth-node-from-end-of-list
0142-linked-list-cycle-ii
0160-intersection-of-two-linked-lists
0206-reverse-linked-list
0234-palindrome-linked-list
0237-delete-node-in-a-linked-list
0908-middle-of-the-linked-list
2216-delete-the-middle-node-of-a-linked-list

Recursion


0050-powx-n
0206-reverse-linked-list
0234-palindrome-linked-list

String Matching


1566-check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence
2292-counting-words-with-a-given-prefix

Sorting


0075-sort-colors
1621-number-of-subsequences-that-satisfy-the-given-sum-condition

Counting


2377-check-if-number-has-equal-digit-count-and-digit-value

Name		Name	Last commit message	Last commit date
Latest commit History 898 Commits
0001-two-sum		0001-two-sum
0002-add-two-numbers		0002-add-two-numbers
0003-longest-substring-without-repeating-characters		0003-longest-substring-without-repeating-characters
0007-reverse-integer		0007-reverse-integer
0008-string-to-integer-atoi		0008-string-to-integer-atoi
0009-palindrome-number		0009-palindrome-number
0019-remove-nth-node-from-end-of-list		0019-remove-nth-node-from-end-of-list
0021-merge-two-sorted-lists		0021-merge-two-sorted-lists
0023-merge-k-sorted-lists		0023-merge-k-sorted-lists
0024-swap-nodes-in-pairs		0024-swap-nodes-in-pairs
0026-remove-duplicates-from-sorted-array		0026-remove-duplicates-from-sorted-array
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
0034-find-first-and-last-position-of-element-in-sorted-array		0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position		0035-search-insert-position
0041-first-missing-positive		0041-first-missing-positive
0042-trapping-rain-water		0042-trapping-rain-water
0048-rotate-image		0048-rotate-image
0050-powx-n		0050-powx-n
0054-spiral-matrix		0054-spiral-matrix
0073-set-matrix-zeroes		0073-set-matrix-zeroes
0074-search-a-2d-matrix		0074-search-a-2d-matrix
0075-sort-colors		0075-sort-colors
0079-word-search		0079-word-search
0083-remove-duplicates-from-sorted-list		0083-remove-duplicates-from-sorted-list
0084-largest-rectangle-in-histogram		0084-largest-rectangle-in-histogram
0085-maximal-rectangle		0085-maximal-rectangle
0092-reverse-linked-list-ii		0092-reverse-linked-list-ii
0100-same-tree		0100-same-tree
0109-convert-sorted-list-to-binary-search-tree		0109-convert-sorted-list-to-binary-search-tree
0114-flatten-binary-tree-to-linked-list		0114-flatten-binary-tree-to-linked-list
0116-populating-next-right-pointers-in-each-node		0116-populating-next-right-pointers-in-each-node
0121-best-time-to-buy-and-sell-stock		0121-best-time-to-buy-and-sell-stock
0125-valid-palindrome		0125-valid-palindrome
0129-sum-root-to-leaf-numbers		0129-sum-root-to-leaf-numbers
0141-linked-list-cycle		0141-linked-list-cycle
0142-linked-list-cycle-ii		0142-linked-list-cycle-ii
0143-reorder-list		0143-reorder-list
0150-evaluate-reverse-polish-notation		0150-evaluate-reverse-polish-notation
0160-intersection-of-two-linked-lists		0160-intersection-of-two-linked-lists
0169-majority-element		0169-majority-element
0189-rotate-array		0189-rotate-array
0190-reverse-bits		0190-reverse-bits
0191-number-of-1-bits		0191-number-of-1-bits
0200-number-of-islands		0200-number-of-islands
0201-bitwise-and-of-numbers-range		0201-bitwise-and-of-numbers-range
0203-remove-linked-list-elements		0203-remove-linked-list-elements
0205-isomorphic-strings		0205-isomorphic-strings
0206-reverse-linked-list		0206-reverse-linked-list
0229-majority-element-ii		0229-majority-element-ii
0231-power-of-two		0231-power-of-two
0234-palindrome-linked-list		0234-palindrome-linked-list
0237-delete-node-in-a-linked-list		0237-delete-node-in-a-linked-list
0238-product-of-array-except-self		0238-product-of-array-except-self
0258-add-digits		0258-add-digits
0268-missing-number		0268-missing-number
0283-move-zeroes		0283-move-zeroes
0287-find-the-duplicate-number		0287-find-the-duplicate-number
0290-word-pattern		0290-word-pattern
0310-minimum-height-trees		0310-minimum-height-trees
0328-odd-even-linked-list		0328-odd-even-linked-list
0330-patching-array		0330-patching-array
0344-reverse-string		0344-reverse-string
0402-remove-k-digits		0402-remove-k-digits
0404-sum-of-left-leaves		0404-sum-of-left-leaves
0409-longest-palindrome		0409-longest-palindrome
0442-find-all-duplicates-in-an-array		0442-find-all-duplicates-in-an-array
0452-minimum-number-of-arrows-to-burst-balloons		0452-minimum-number-of-arrows-to-burst-balloons
0463-island-perimeter		0463-island-perimeter
0500-keyboard-row		0500-keyboard-row
0502-ipo		0502-ipo
0506-relative-ranks		0506-relative-ranks
0509-fibonacci-number		0509-fibonacci-number
0523-continuous-subarray-sum		0523-continuous-subarray-sum
0543-diameter-of-binary-tree		0543-diameter-of-binary-tree
0621-task-scheduler		0621-task-scheduler
0633-sum-of-square-numbers		0633-sum-of-square-numbers
0648-replace-words		0648-replace-words
0678-valid-parenthesis-string		0678-valid-parenthesis-string
0680-valid-palindrome-ii		0680-valid-palindrome-ii
0704-binary-search		0704-binary-search
0739-daily-temperatures		0739-daily-temperatures
0752-open-the-lock		0752-open-the-lock
0787-cheapest-flights-within-k-stops		0787-cheapest-flights-within-k-stops
0791-custom-sort-string		0791-custom-sort-string
0834-sum-of-distances-in-tree		0834-sum-of-distances-in-tree
0852-peak-index-in-a-mountain-array		0852-peak-index-in-a-mountain-array
0853-most-profit-assigning-work		0853-most-profit-assigning-work
0861-score-after-flipping-matrix		0861-score-after-flipping-matrix
0876-middle-of-the-linked-list		0876-middle-of-the-linked-list
0881-boats-to-save-people		0881-boats-to-save-people
0882-peak-index-in-a-mountain-array		0882-peak-index-in-a-mountain-array
0908-middle-of-the-linked-list		0908-middle-of-the-linked-list
0917-reverse-only-letters		0917-reverse-only-letters
0921-minimum-add-to-make-parentheses-valid		0921-minimum-add-to-make-parentheses-valid
0930-binary-subarrays-with-sum		0930-binary-subarrays-with-sum
0942-di-string-match		0942-di-string-match
0945-minimum-increment-to-make-array-unique		0945-minimum-increment-to-make-array-unique
0948-bag-of-tokens		0948-bag-of-tokens
0950-reveal-cards-in-increasing-order		0950-reveal-cards-in-increasing-order

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LeetCode

String

Two Pointers

Hash Table

Greedy

Array

Trie

Prefix Sum

Sorting

Counting Sort

Heap (Priority Queue)

Math

Binary Search

LeetCode Topics

Array

Matrix

String

Stack

Greedy

Hash Table

Breadth-First Search

Ordered Set

Binary Search

Two Pointers

Math

Sliding Window

Linked List

Recursion

String Matching

Sorting

Counting

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