Leetcode-Solutions

A collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Array

0001-two-sum
0004-median-of-two-sorted-arrays
0011-container-with-most-water
0014-longest-common-prefix
0026-remove-duplicates-from-sorted-array
0027-remove-element
0031-next-permutation
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0036-valid-sudoku
0056-merge-intervals
1006-vowel-spellchecker
2307-replace-non-coprime-numbers-in-array
2429-design-a-food-rating-system
3242-count-elements-with-maximum-frequency
3797-design-spreadsheet
3827-implement-router

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0012-integer-to-roman
0013-roman-to-integer
0017-letter-combinations-of-a-phone-number
0036-valid-sudoku
0202-happy-number
1006-vowel-spellchecker
1264-maximum-number-of-words-you-can-type
2429-design-a-food-rating-system
3242-count-elements-with-maximum-frequency
3678-design-task-manager
3797-design-spreadsheet
3827-implement-router

Math

0002-add-two-numbers
0007-reverse-integer
0009-palindrome-number
0012-integer-to-roman
0013-roman-to-integer
0029-divide-two-integers
0202-happy-number
2307-replace-non-coprime-numbers-in-array
3279-alice-and-bob-playing-flower-game
3462-vowels-game-in-a-string

Linked List

0002-add-two-numbers
0019-remove-nth-node-from-end-of-list
0021-merge-two-sorted-lists
0023-merge-k-sorted-lists
0024-swap-nodes-in-pairs

Recursion

0002-add-two-numbers
0010-regular-expression-matching
0021-merge-two-sorted-lists
0024-swap-nodes-in-pairs
0044-wildcard-matching

String

0003-longest-substring-without-repeating-characters
0005-longest-palindromic-substring
0006-zigzag-conversion
0010-regular-expression-matching
0012-integer-to-roman
0013-roman-to-integer
0014-longest-common-prefix
0017-letter-combinations-of-a-phone-number
0020-valid-parentheses
0028-find-the-index-of-the-first-occurrence-in-a-string
0032-longest-valid-parentheses
0044-wildcard-matching
1006-vowel-spellchecker
1264-maximum-number-of-words-you-can-type
2429-design-a-food-rating-system
2887-sort-vowels-in-a-string
3462-vowels-game-in-a-string
3797-design-spreadsheet

Sliding Window

0003-longest-substring-without-repeating-characters

Matrix

0036-valid-sudoku
3797-design-spreadsheet

Two Pointers

0005-longest-palindromic-substring
0011-container-with-most-water
0019-remove-nth-node-from-end-of-list
0026-remove-duplicates-from-sorted-array
0027-remove-element
0028-find-the-index-of-the-first-occurrence-in-a-string
0031-next-permutation
0202-happy-number

Dynamic Programming

0005-longest-palindromic-substring
0010-regular-expression-matching
0032-longest-valid-parentheses
0044-wildcard-matching

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
0035-search-insert-position
3827-implement-router

Divide and Conquer

0004-median-of-two-sorted-arrays
0023-merge-k-sorted-lists

Greedy

0011-container-with-most-water
0044-wildcard-matching

Sorting

0056-merge-intervals
2887-sort-vowels-in-a-string

Brainteaser

3462-vowels-game-in-a-string

Game Theory

3462-vowels-game-in-a-string

Stack

0020-valid-parentheses
0032-longest-valid-parentheses
2307-replace-non-coprime-numbers-in-array

Number Theory

2307-replace-non-coprime-numbers-in-array

Design

2429-design-a-food-rating-system
3678-design-task-manager
3797-design-spreadsheet
3827-implement-router

Heap (Priority Queue)

0023-merge-k-sorted-lists
2429-design-a-food-rating-system
3678-design-task-manager

Ordered Set

2429-design-a-food-rating-system
3678-design-task-manager
3827-implement-router

Trie

0014-longest-common-prefix

Backtracking

0017-letter-combinations-of-a-phone-number

Merge Sort

0023-merge-k-sorted-lists

String Matching

0028-find-the-index-of-the-first-occurrence-in-a-string

Bit Manipulation

0029-divide-two-integers

Queue

3827-implement-router

Counting

3242-count-elements-with-maximum-frequency