Download the complete list here -

Arrays

• https://leetcode.com/problems/two-sum/
• https://leetcode.com/problems/3sum/
• https://leetcode.com/problems/contains-duplicate
• https://leetcode.com/problems/merge-intervals/
• https://leetcode.com/problems/kth-largest-element-in-an-array/
• https://leetcode.com/problems/maximum-subarray/
• https://leetcode.com/problems/maximum-product-subarray/
• https://leetcode.com/problems/best-time-to-buy-and-sell-stock
• https://leetcode.com/problems/container-with-most-water/
• https://leetcode.com/problems/trapping-rain-water/
• https://leetcode.com/problems/subarray-sum-equals-k
• https://leetcode.com/problems/minimum-size-subarray-sum/
• https://leetcode.com/problems/median-of-two-sorted-arrays
• https://leetcode.com/problems/sort-colors/
• https://leetcode.com/problems/majority-element/
• https://leetcode.com/problems/longest-consecutive-sequence
• https://leetcode.com/problems/longest-substring-without-repeating-characters
• https://leetcode.com/problems/minimum-window-substring
• https://leetcode.com/problems/permutation-in-string/

2D Arrays

• https://leetcode.com/problems/search-a-2d-matrix/
• https://leetcode.com/problems/rotate-image/
• https://leetcode.com/problems/set-matrix-zeroes/
• https://leetcode.com/problems/valid-sudoku

Stack and Queues

• https://leetcode.com/problems/implement-queue-using-stacks
• https://leetcode.com/problems/implement-stack-using-queues
• https://leetcode.com/problems/valid-parentheses
• https://leetcode.com/problems/daily-temperatures/
• https://leetcode.com/problems/implement-queue-using-stacks
• https://leetcode.com/problems/longest-valid-parentheses
• https://leetcode.com/problems/largest-rectangle-in-histogram
• https://leetcode.com/problems/maximal-rectangle
• https://leetcode.com/problems/min-stack/
• https://leetcode.com/problems/trapping-rain-water
• https://leetcode.com/problems/remove-k-digits
• https://leetcode.com/problems/sliding-window-maximum/

String

• https://leetcode.com/problems/longest-palindromic-substring/
• https://leetcode.com/problems/longest-substring-without-repeating-characters/
• https://leetcode.com/problems/longest-common-prefix/
• https://leetcode.com/problems/minimum-window-substring/
• https://leetcode.com/problems/valid-anagram/
• https://leetcode.com/problems/regular-expression-matching/
• https://leetcode.com/problems/largest-number/

Greedy

• https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons
• https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/
• https://leetcode.com/problems/jump-game-ii/
• https://leetcode.com/problems/candy/

Recursion and Backtracking

• https://leetcode.com/problems/combination-sum/
• https://leetcode.com/problems/combination-sum-ii/
• https://leetcode.com/problems/letter-combinations-of-a-phone-number/
• https://leetcode.com/problems/generate-parentheses/
• https://leetcode.com/problems/sudoku-solver
• https://leetcode.com/problems/permutations/
• https://leetcode.com/problems/permutations-ii/
• https://leetcode.com/problems/n-queens/
• https://leetcode.com/problems/n-queens-ii/
• https://leetcode.com/problems/subsets
• https://leetcode.com/problems/next-permutation
• https://leetcode.com/problems/permutation-sequence/
• https://leetcode.com/problems/combinations/

Linked List

• https://leetcode.com/problems/reverse-linked-list (Both Iterative / Recursive)
• https://leetcode.com/problems/reverse-nodes-in-k-group
• https://leetcode.com/problems/linked-list-cycle/
• https://leetcode.com/problems/merge-two-sorted-lists
• https://leetcode.com/problems/merge-k-sorted-lists
• https://leetcode.com/problems/linked-list-cycle/
• https://leetcode.com/problems/middle-of-the-linked-list
• https://leetcode.com/problems/delete-the-middle-node-of-a-linked-list
• https://leetcode.com/problems/intersection-of-two-linked-lists/
• https://leetcode.com/problems/sort-list/
• https://leetcode.com/problems/copy-list-with-random-pointer/
• https://leetcode.com/problems/lru-cache

Heap

• https://leetcode.com/problems/kth-largest-element-in-an-array
• https://leetcode.com/problems/find-median-from-data-stream
• https://leetcode.com/problems/top-k-frequent-elements
• https://leetcode.com/problems/top-k-frequent-words
• https://leetcode.com/problems/k-closest-points-to-origin/

Binary Trees

• https://leetcode.com/problems/binary-tree-inorder-traversal/
• https://leetcode.com/problems/binary-tree-level-order-traversal/
• https://leetcode.com/problems/diameter-of-binary-tree
• https://leetcode.com/problems/maximum-depth-of-binary-tree
• https://leetcode.com/problems/invert-binary-tree/
• https://leetcode.com/problems/same-tree/
• https://leetcode.com/problems/binary-tree-right-side-view/
• https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/
• https://leetcode.com/problems/flatten-binary-tree-to-linked-list/
• https://leetcode.com/problems/path-sum-iii/
• https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
• https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/
• https://leetcode.com/problems/serialize-and-deserialize-binary-tree

Binary Search Trees

• https://leetcode.com/problems/delete-node-in-a-bst/
• https://leetcode.com/problems/validate-binary-search-tree/
• https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
• https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
• https://leetcode.com/problems/kth-smallest-element-in-a-bst/

Trie

• https://leetcode.com/problems/implement-trie-prefix-tree/
• https://leetcode.com/problems/design-add-and-search-words-data-structure/

Dynamic Programming

• https://leetcode.com/problems/coin-change/
• https://leetcode.com/problems/target-sum/
• https://leetcode.com/problems/climbing-stairs
• https://leetcode.com/problems/maximum-subarray
• https://leetcode.com/problems/edit-distance/
• https://leetcode.com/problems/partition-equal-subset-sum/
• https://leetcode.com/problems/word-break
• https://leetcode.com/problems/word-break-ii/
• https://leetcode.com/problems/combination-sum-iv
• https://leetcode.com/problems/maximum-profit-in-job-scheduling/
• https://leetcode.com/problems/minimum-cost-to-cut-a-stick/
• https://leetcode.com/problems/house-robber/
• https://leetcode.com/problems/longest-increasing-subsequence
• https://leetcode.com/problems/partition-equal-subset-sum/
• https://leetcode.com/problems/decode-ways/
• https://leetcode.com/problems/maximal-square/
• https://leetcode.com/problems/jump-game

Graph

• https://leetcode.com/problems/flood-fill
• https://leetcode.com/problems/clone-graph/
• https://leetcode.com/problems/number-of-islands/
• https://leetcode.com/problems/rotting-oranges
• https://leetcode.com/problems/word-search/
• https://leetcode.com/problems/course-schedule
• https://leetcode.com/problems/course-schedule-ii
• https://leetcode.com/problems/possible-bipartition/
• https://leetcode.com/problems/cheapest-flights-within-k-stops/
• https://leetcode.com/problems/bus-routes/
• https://leetcode.com/problems/word-search-ii/
• https://leetcode.com/problems/water-and-jug-problem/

Bits

• https://leetcode.com/problems/single-number/
• https://leetcode.com/problems/single-number-ii/
• https://leetcode.com/problems/number-of-1-bits/
• https://leetcode.com/problems/bitwise-and-of-numbers-range/
• https://leetcode.com/problems/counting-bits
• https://leetcode.com/problems/hamming-distance/
• https://leetcode.com/problems/power-of-two/
• https://leetcode.com/problems/reverse-bits/