〈 LeetCode - Algorithms
Here are a collection of LeetCode problems which useful to prep for traditional coding interviews.
How to Use
Instructions for decorating leetcode lists with logged-in user data.
Install this user script to enhance the lists below: blog.leetcode.user.js
The user script will request access to a LeetCode URL to fetch your logged-in user’s problem data.
LeetCode Problem Data: https://leetcode.com/api/problems/algorithms/
To generate more lists of problem slugs, use this JavaScript query in your browser’s developer console from any page containing links to LeetCode problems:
[...document.querySelectorAll('a')]
.map( li => li.href.match(/\/problems\/([^\/]+)\//))
.filter( match => match)
.map( match => match[1])
More user scripts at: UserScripts
Algorithms I
- binary-search
- first-bad-version
- search-insert-position
- squares-of-a-sorted-array
- rotate-array
- move-zeroes
- two-sum-ii-input-array-is-sorted
- reverse-string
- reverse-words-in-a-string-iii
- middle-of-the-linked-list
- remove-nth-node-from-end-of-list
- longest-substring-without-repeating-characters
- permutation-in-string
- flood-fill
- max-area-of-island
- merge-two-binary-trees
- populating-next-right-pointers-in-each-node
- 01-matrix
- rotting-oranges
- merge-two-sorted-lists
- reverse-linked-list
- combinations
- permutations
- letter-case-permutation
- climbing-stairs
- house-robber
- triangle
- power-of-two
- number-of-1-bits
- reverse-bits
- single-number
Algorithms II
- find-first-and-last-position-of-element-in-sorted-array
- search-in-rotated-sorted-array
- search-a-2d-matrix
- find-minimum-in-rotated-sorted-array
- find-peak-element
- remove-duplicates-from-sorted-list-ii
- 3sum
- backspace-string-compare
- interval-list-intersections
- container-with-most-water
- find-all-anagrams-in-a-string
- subarray-product-less-than-k
- minimum-size-subarray-sum
- number-of-islands
- number-of-provinces
- populating-next-right-pointers-in-each-node-ii
- subtree-of-another-tree
- shortest-path-in-binary-matrix
- surrounded-regions
- all-paths-from-source-to-target
- subsets
- subsets-ii
- permutations-ii
- combination-sum
- combination-sum-ii
- letter-combinations-of-a-phone-number
- generate-parentheses
- word-search
- house-robber-ii
- jump-game
- jump-game-ii
- unique-paths
- longest-palindromic-substring
- arithmetic-slices
- decode-ways
- word-break
- longest-increasing-subsequence
- number-of-longest-increasing-subsequence
- longest-common-subsequence
- delete-operation-for-two-strings
- edit-distance
- coin-change
- integer-break
- bitwise-and-of-numbers-range
- shuffle-an-array
- happy-number
- max-points-on-a-line
Top 100
- two-sum
- add-two-numbers
- longest-substring-without-repeating-characters
- median-of-two-sorted-arrays
- longest-palindromic-substring
- container-with-most-water
- roman-to-integer
- longest-common-prefix
- 3sum
- letter-combinations-of-a-phone-number
- remove-nth-node-from-end-of-list
- valid-parentheses
- merge-two-sorted-lists
- generate-parentheses
- merge-k-sorted-lists
- swap-nodes-in-pairs
- reverse-nodes-in-k-group
- next-permutation
- longest-valid-parentheses
- search-in-rotated-sorted-array
- find-first-and-last-position-of-element-in-sorted-array
- search-insert-position
- combination-sum
- first-missing-positive
- trapping-rain-water
- jump-game-ii
- permutations
- rotate-image
- group-anagrams
- n-queens
- maximum-subarray
- spiral-matrix
- jump-game
- merge-intervals
- unique-paths
- minimum-path-sum
- climbing-stairs
- edit-distance
- set-matrix-zeroes
- search-a-2d-matrix
- sort-colors
- minimum-window-substring
- subsets
- word-search
- largest-rectangle-in-histogram
- binary-tree-inorder-traversal
- validate-binary-search-tree
- symmetric-tree
- binary-tree-level-order-traversal
- maximum-depth-of-binary-tree
- construct-binary-tree-from-preorder-and-inorder-traversal
- flatten-binary-tree-to-linked-list
- pascals-triangle
- best-time-to-buy-and-sell-stock
- binary-tree-maximum-path-sum
- longest-consecutive-sequence
- palindrome-partitioning
- single-number
- copy-list-with-random-pointer
- word-break
- linked-list-cycle
- linked-list-cycle-ii
- lru-cache
- sort-list
- maximum-product-subarray
- find-minimum-in-rotated-sorted-array
- min-stack
- intersection-of-two-linked-lists
- majority-element
- rotate-array
- house-robber
- binary-tree-right-side-view
- number-of-islands
- reverse-linked-list
- course-schedule
- implement-trie-prefix-tree
- kth-largest-element-in-an-array
- invert-binary-tree
- kth-smallest-element-in-a-bst
- palindrome-linked-list
- lowest-common-ancestor-of-a-binary-tree
- product-of-array-except-self
- sliding-window-maximum
- search-a-2d-matrix-ii
- move-zeroes
- find-the-duplicate-number
- find-median-from-data-stream
- longest-increasing-subsequence
- coin-change
- top-k-frequent-elements
- decode-string
- partition-equal-subset-sum
- find-all-anagrams-in-a-string
- diameter-of-binary-tree
- subarray-sum-equals-k
- permutation-in-string
- binary-search
- daily-temperatures
- rotting-oranges
- longest-common-subsequence