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LeetCode

A collection of LeetCode questions to ace the coding interview!

LeetCode Topics

Array

0001-two-sum
0004-median-of-two-sorted-arrays
0014-longest-common-prefix
0015-3sum
0031-next-permutation
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0041-first-missing-positive
0048-rotate-image
0049-group-anagrams
0053-maximum-subarray
0074-search-a-2d-matrix
0075-sort-colors
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0128-longest-consecutive-sequence
0169-majority-element
0739-daily-temperatures

Binary Search

0004-median-of-two-sorted-arrays
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0074-search-a-2d-matrix

Divide and Conquer

0004-median-of-two-sorted-arrays
0053-maximum-subarray
0169-majority-element

Hash Table

0001-two-sum
0013-roman-to-integer
0041-first-missing-positive
0049-group-anagrams
0076-minimum-window-substring
0128-longest-consecutive-sequence
0141-linked-list-cycle
0169-majority-element

Linked List

0002-add-two-numbers
0021-merge-two-sorted-lists
0114-flatten-binary-tree-to-linked-list
0141-linked-list-cycle

Math

0002-add-two-numbers
0007-reverse-integer
0009-palindrome-number
0013-roman-to-integer
0048-rotate-image

Recursion

0002-add-two-numbers
0021-merge-two-sorted-lists

Two Pointers

0005-longest-palindromic-substring
0015-3sum
0031-next-permutation
0075-sort-colors
0088-merge-sorted-array
0125-valid-palindrome
0141-linked-list-cycle

String

0005-longest-palindromic-substring
0013-roman-to-integer
0014-longest-common-prefix
0020-valid-parentheses
0049-group-anagrams
0076-minimum-window-substring
0125-valid-palindrome

Dynamic Programming

0005-longest-palindromic-substring
0053-maximum-subarray
0121-best-time-to-buy-and-sell-stock

Trie

0014-longest-common-prefix

Sorting

0015-3sum
0049-group-anagrams
0075-sort-colors
0088-merge-sorted-array
0169-majority-element

Stack

0020-valid-parentheses
0114-flatten-binary-tree-to-linked-list
0155-min-stack
0739-daily-temperatures

Tree

0114-flatten-binary-tree-to-linked-list

Depth-First Search

0114-flatten-binary-tree-to-linked-list

Binary Tree

0114-flatten-binary-tree-to-linked-list

Design

0155-min-stack

Matrix

0048-rotate-image
0074-search-a-2d-matrix

Sliding Window

0076-minimum-window-substring

Union-Find

0128-longest-consecutive-sequence

Counting

0169-majority-element

Monotonic Stack

0739-daily-temperatures

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A collection of LeetCode questions to ace the coding interview!

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