Data Structures and Algorithms

Collection of LeetCode questions to ace the coding interview!

LeetCode Topics

Array


0268-missing-number

Hash Table


0141-linked-list-cycle
0268-missing-number

Math


0268-missing-number

Binary Search


0268-missing-number

Bit Manipulation


0268-missing-number

Sorting


0268-missing-number

Linked List


0141-linked-list-cycle
0206-reverse-linked-list
0908-middle-of-the-linked-list

Recursion


0206-reverse-linked-list

Two Pointers


0141-linked-list-cycle
0151-reverse-words-in-a-string
0908-middle-of-the-linked-list

String


0151-reverse-words-in-a-string

Tree


0111-minimum-depth-of-binary-tree

Depth-First Search


0111-minimum-depth-of-binary-tree

Breadth-First Search


0111-minimum-depth-of-binary-tree

Binary Tree


0111-minimum-depth-of-binary-tree

Name		Name	Last commit message	Last commit date
Latest commit History 1,915 Commits
0003-longest-substring-without-repeating-characters		0003-longest-substring-without-repeating-characters
0020-valid-parentheses		0020-valid-parentheses
0022-generate-parentheses		0022-generate-parentheses
0031-next-permutation		0031-next-permutation
0043-multiply-strings		0043-multiply-strings
0048-rotate-image		0048-rotate-image
0050-powx-n		0050-powx-n
0055-jump-game		0055-jump-game
0056-merge-intervals		0056-merge-intervals
0062-unique-paths		0062-unique-paths
0073-set-matrix-zeroes		0073-set-matrix-zeroes
0074-search-a-2d-matrix		0074-search-a-2d-matrix
0075-sort-colors		0075-sort-colors
0078-subsets		0078-subsets
0084-largest-rectangle-in-histogram		0084-largest-rectangle-in-histogram
0094-binary-tree-inorder-traversal		0094-binary-tree-inorder-traversal
0098-validate-binary-search-tree		0098-validate-binary-search-tree
01-matrix		01-matrix
0100-same-tree		0100-same-tree
0102-binary-tree-level-order-traversal		0102-binary-tree-level-order-traversal
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
0111-minimum-depth-of-binary-tree		0111-minimum-depth-of-binary-tree
0116-populating-next-right-pointers-in-each-node		0116-populating-next-right-pointers-in-each-node
0118-pascals-triangle		0118-pascals-triangle
0121-best-time-to-buy-and-sell-stock		0121-best-time-to-buy-and-sell-stock
0136-single-number		0136-single-number
0139-word-break		0139-word-break
0141-linked-list-cycle		0141-linked-list-cycle
0144-binary-tree-preorder-traversal		0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal		0145-binary-tree-postorder-traversal
0150-evaluate-reverse-polish-notation		0150-evaluate-reverse-polish-notation
0151-reverse-words-in-a-string		0151-reverse-words-in-a-string
0152-maximum-product-subarray		0152-maximum-product-subarray
0155-min-stack		0155-min-stack
0169-majority-element		0169-majority-element
0198-house-robber		0198-house-robber
0199-binary-tree-right-side-view		0199-binary-tree-right-side-view
0206-reverse-linked-list		0206-reverse-linked-list
0213-house-robber-ii		0213-house-robber-ii
0217-contains-duplicate		0217-contains-duplicate
0229-majority-element-ii		0229-majority-element-ii
0230-kth-smallest-element-in-a-bst		0230-kth-smallest-element-in-a-bst
0232-implement-queue-using-stacks		0232-implement-queue-using-stacks
0238-product-of-array-except-self		0238-product-of-array-except-self
0240-search-a-2d-matrix-ii		0240-search-a-2d-matrix-ii
0242-valid-anagram		0242-valid-anagram
0268-missing-number		0268-missing-number
0287-find-the-duplicate-number		0287-find-the-duplicate-number
0303-range-sum-query-immutable		0303-range-sum-query-immutable
0378-kth-smallest-element-in-a-sorted-matrix		0378-kth-smallest-element-in-a-sorted-matrix
0424-longest-repeating-character-replacement		0424-longest-repeating-character-replacement
0442-find-all-duplicates-in-an-array		0442-find-all-duplicates-in-an-array
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
0540-single-element-in-a-sorted-array		0540-single-element-in-a-sorted-array
0572-subtree-of-another-tree		0572-subtree-of-another-tree
0739-daily-temperatures		0739-daily-temperatures
0783-search-in-a-binary-search-tree		0783-search-in-a-binary-search-tree
0792-binary-search		0792-binary-search
0908-middle-of-the-linked-list		0908-middle-of-the-linked-list
1-bit-and-2-bit-characters		1-bit-and-2-bit-characters
1019-squares-of-a-sorted-array		1019-squares-of-a-sorted-array
1205-defanging-an-ip-address		1205-defanging-an-ip-address
132-pattern		132-pattern
207-course-schedule		207-course-schedule
210-course-schedule-ii		210-course-schedule-ii
337-house-robber-iii		337-house-robber-iii
3sum-closest		3sum-closest
3sum		3sum
42-trapping-rain-water		42-trapping-rain-water
4sum-ii		4sum-ii
4sum		4sum
740-delete-and-earn		740-delete-and-earn
CPP		CPP
Sorting		Sorting
add-minimum-number-of-rungs		add-minimum-number-of-rungs
add-two-numbers		add-two-numbers
adding-two-negabinary-numbers		adding-two-negabinary-numbers
additive-number		additive-number
advantage-shuffle		advantage-shuffle
all-elements-in-two-binary-search-trees		all-elements-in-two-binary-search-trees
all-nodes-distance-k-in-binary-tree		all-nodes-distance-k-in-binary-tree
all-oone-data-structure		all-oone-data-structure
all-paths-from-source-to-target		all-paths-from-source-to-target
angle-between-hands-of-a-clock		angle-between-hands-of-a-clock
arithmetic-slices-ii-subsequence		arithmetic-slices-ii-subsequence
arithmetic-slices		arithmetic-slices
array-nesting		array-nesting
array-of-doubled-pairs		array-of-doubled-pairs
array-partition-i		array-partition-i
assign-cookies		assign-cookies
asteroid-collision		asteroid-collision
average-of-levels-in-binary-tree		average-of-levels-in-binary-tree
average-salary-excluding-the-minimum-and-maximum-salary		average-salary-excluding-the-minimum-and-maximum-salary
average-waiting-time		average-waiting-time
backspace-string-compare		backspace-string-compare
bag-of-tokens		bag-of-tokens
balanced-binary-tree		balanced-binary-tree
basic-calculator-ii		basic-calculator-ii

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Data Structures and Algorithms

LeetCode Topics

Array

Hash Table

Math

Binary Search

Bit Manipulation

Sorting

Linked List

Recursion

Two Pointers

String

Tree

Depth-First Search

Breadth-First Search

Binary Tree

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Data Structures and Algorithms

LeetCode Topics

Array

Hash Table

Math

Binary Search

Bit Manipulation

Sorting

Linked List

Recursion

Two Pointers

String

Tree

Depth-First Search

Breadth-First Search

Binary Tree

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