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Collection of LeetCode questions to ace the coding interview

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0001-two-sum
0001-two-sum
 
 
0003-longest-substring-without-repeating-characters
0003-longest-substring-without-repeating-characters
 
 
0005-longest-palindromic-substring
0005-longest-palindromic-substring
 
 
0008-string-to-integer-atoi
0008-string-to-integer-atoi
 
 
0011-container-with-most-water
0011-container-with-most-water
 
 
0013-roman-to-integer
0013-roman-to-integer
 
 
0014-longest-common-prefix
0014-longest-common-prefix
 
 
0015-3sum
0015-3sum
 
 
0017-letter-combinations-of-a-phone-number
0017-letter-combinations-of-a-phone-number
 
 
0019-remove-nth-node-from-end-of-list
0019-remove-nth-node-from-end-of-list
 
 
0020-valid-parentheses
0020-valid-parentheses
 
 
0021-merge-two-sorted-lists
0021-merge-two-sorted-lists
 
 
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
 
 
0033-search-in-rotated-sorted-array
0033-search-in-rotated-sorted-array
 
 
0035-search-insert-position
0035-search-insert-position
 
 
0036-valid-sudoku
0036-valid-sudoku
 
 
0039-combination-sum
0039-combination-sum
 
 
0046-permutations
0046-permutations
 
 
0049-group-anagrams
0049-group-anagrams
 
 
0053-maximum-subarray
0053-maximum-subarray
 
 
0054-spiral-matrix
0054-spiral-matrix
 
 
0056-merge-intervals
0056-merge-intervals
 
 
0057-insert-interval
0057-insert-interval
 
 
0058-length-of-last-word
0058-length-of-last-word
 
 
0062-unique-paths
0062-unique-paths
 
 
0066-plus-one
0066-plus-one
 
 
0067-add-binary
0067-add-binary
 
 
0069-sqrtx
0069-sqrtx
 
 
0070-climbing-stairs
0070-climbing-stairs
 
 
0075-sort-colors
0075-sort-colors
 
 
0078-subsets
0078-subsets
 
 
0079-word-search
0079-word-search
 
 
0083-remove-duplicates-from-sorted-list
0083-remove-duplicates-from-sorted-list
 
 
0088-merge-sorted-array
0088-merge-sorted-array
 
 
0094-binary-tree-inorder-traversal
0094-binary-tree-inorder-traversal
 
 
0098-validate-binary-search-tree
0098-validate-binary-search-tree
 
 
0100-same-tree
0100-same-tree
 
 
0101-symmetric-tree
0101-symmetric-tree
 
 
0102-binary-tree-level-order-traversal
0102-binary-tree-level-order-traversal
 
 
0104-maximum-depth-of-binary-tree
0104-maximum-depth-of-binary-tree
 
 
0105-construct-binary-tree-from-preorder-and-inorder-traversal
0105-construct-binary-tree-from-preorder-and-inorder-traversal
 
 
0108-convert-sorted-array-to-binary-search-tree
0108-convert-sorted-array-to-binary-search-tree
 
 
0110-balanced-binary-tree
0110-balanced-binary-tree
 
 
0111-minimum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
 
 
0112-path-sum
0112-path-sum
 
 
0113-path-sum-ii
0113-path-sum-ii
 
 
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
 
 
0133-clone-graph
0133-clone-graph
 
 
0134-gas-station
0134-gas-station
 
 
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
 
 
0146-lru-cache
0146-lru-cache
 
 
0150-evaluate-reverse-polish-notation
0150-evaluate-reverse-polish-notation
 
 
0152-maximum-product-subarray
0152-maximum-product-subarray
 
 
0155-min-stack
0155-min-stack
 
 
0160-intersection-of-two-linked-lists
0160-intersection-of-two-linked-lists
 
 
0169-majority-element
0169-majority-element
 
 
0171-excel-sheet-column-number
0171-excel-sheet-column-number
 
 
0189-rotate-array
0189-rotate-array
 
 
0190-reverse-bits
0190-reverse-bits
 
 
0191-number-of-1-bits
0191-number-of-1-bits
 
 
0198-house-robber
0198-house-robber
 
 
0199-binary-tree-right-side-view
0199-binary-tree-right-side-view
 
 
0200-number-of-islands
0200-number-of-islands
 
 
0202-happy-number
0202-happy-number
 
 
0203-remove-linked-list-elements
0203-remove-linked-list-elements
 
 
0205-isomorphic-strings
0205-isomorphic-strings
 
 
0206-reverse-linked-list
0206-reverse-linked-list
 
 
0207-course-schedule
0207-course-schedule
 
 
0208-implement-trie-prefix-tree
0208-implement-trie-prefix-tree
 
 
0210-course-schedule-ii
0210-course-schedule-ii
 
 
0211-design-add-and-search-words-data-structure
0211-design-add-and-search-words-data-structure
 
 
0217-contains-duplicate
0217-contains-duplicate
 
 
0222-count-complete-tree-nodes
0222-count-complete-tree-nodes
 
 
0226-invert-binary-tree
0226-invert-binary-tree
 
 
0230-kth-smallest-element-in-a-bst
0230-kth-smallest-element-in-a-bst
 
 
0232-implement-queue-using-stacks
0232-implement-queue-using-stacks
 
 
0234-palindrome-linked-list
0234-palindrome-linked-list
 
 
0235-lowest-common-ancestor-of-a-binary-search-tree
0235-lowest-common-ancestor-of-a-binary-search-tree
 
 
0236-lowest-common-ancestor-of-a-binary-tree
0236-lowest-common-ancestor-of-a-binary-tree
 
 
0238-product-of-array-except-self
0238-product-of-array-except-self
 
 
0242-valid-anagram
0242-valid-anagram
 
 
0257-binary-tree-paths
0257-binary-tree-paths
 
 
0258-add-digits
0258-add-digits
 
 
0268-missing-number
0268-missing-number
 
 
0278-first-bad-version
0278-first-bad-version
 
 
0283-move-zeroes
0283-move-zeroes
 
 
0287-find-the-duplicate-number
0287-find-the-duplicate-number
 
 
0290-word-pattern
0290-word-pattern
 
 
0300-longest-increasing-subsequence
0300-longest-increasing-subsequence
 
 
0310-minimum-height-trees
0310-minimum-height-trees
 
 

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LeetCode-PS

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

https://www.teamblind.com/post/New-Year-Gift---Curated-List-of-Top-75-LeetCode-Questions-to-Save-Your-Time-OaM1orEU

https://neetcode.io/practice

https://www.techinterviewhandbook.org/grind75

image

LeetCode Topics

Array
0001-two-sum
0015-3sum
0039-combination-sum
0057-insert-interval
0121-best-time-to-buy-and-sell-stock
0169-majority-element
0217-contains-duplicate
0238-product-of-array-except-self

Hash Table
0001-two-sum
0169-majority-element
0217-contains-duplicate

Dynamic Programming
0121-best-time-to-buy-and-sell-stock

Divide and Conquer
0169-majority-element

Sorting
0015-3sum
0169-majority-element
0217-contains-duplicate

Counting
0169-majority-element

Two Pointers
0015-3sum

Prefix Sum
0238-product-of-array-except-self

Backtracking
0039-combination-sum

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