LeetCode

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

LeetCode Topics

Two Pointers

0031-next-permutation
0042-trapping-rain-water
0061-rotate-list
0075-sort-colors
0088-merge-sorted-array
0125-valid-palindrome
0141-linked-list-cycle
0151-reverse-words-in-a-string
0160-intersection-of-two-linked-lists
0234-palindrome-linked-list
0287-find-the-duplicate-number
0908-middle-of-the-linked-list

String

0013-roman-to-integer
0014-longest-common-prefix
0125-valid-palindrome
0151-reverse-words-in-a-string
0205-isomorphic-strings
0242-valid-anagram
0451-sort-characters-by-frequency
0796-rotate-string
1021-remove-outermost-parentheses
1903-largest-odd-number-in-string

Math

0002-add-two-numbers
0009-palindrome-number
0013-roman-to-integer
0048-rotate-image
0050-powx-n
0062-unique-paths
1013-fibonacci-number
1903-largest-odd-number-in-string

Dynamic Programming

0042-trapping-rain-water
0053-maximum-subarray
0062-unique-paths
0118-pascals-triangle
0121-best-time-to-buy-and-sell-stock
0152-maximum-product-subarray
1013-fibonacci-number

Recursion

0002-add-two-numbers
0021-merge-two-sorted-lists
0050-powx-n
0206-reverse-linked-list
0234-palindrome-linked-list
1013-fibonacci-number

Memoization

1013-fibonacci-number

Array

0001-two-sum
0014-longest-common-prefix
0031-next-permutation
0034-find-first-and-last-position-of-element-in-sorted-array
0042-trapping-rain-water
0048-rotate-image
0053-maximum-subarray
0056-merge-intervals
0073-set-matrix-zeroes
0074-search-a-2d-matrix
0075-sort-colors
0088-merge-sorted-array
0118-pascals-triangle
0121-best-time-to-buy-and-sell-stock
0152-maximum-product-subarray
0169-majority-element
0229-majority-element-ii
0287-find-the-duplicate-number
0485-max-consecutive-ones
0704-binary-search

Hash Table

0001-two-sum
0013-roman-to-integer
0073-set-matrix-zeroes
0141-linked-list-cycle
0160-intersection-of-two-linked-lists
0169-majority-element
0205-isomorphic-strings
0229-majority-element-ii
0242-valid-anagram
0451-sort-characters-by-frequency

Matrix

0048-rotate-image
0073-set-matrix-zeroes
0074-search-a-2d-matrix

Divide and Conquer

0053-maximum-subarray
0169-majority-element

Sorting

0056-merge-intervals
0075-sort-colors
0088-merge-sorted-array
0169-majority-element
0229-majority-element-ii
0242-valid-anagram
0451-sort-characters-by-frequency

Binary Search

0034-find-first-and-last-position-of-element-in-sorted-array
0074-search-a-2d-matrix
0287-find-the-duplicate-number
0704-binary-search

Bit Manipulation

0287-find-the-duplicate-number

Counting

0169-majority-element
0229-majority-element-ii
0451-sort-characters-by-frequency

Linked List

0002-add-two-numbers
0021-merge-two-sorted-lists
0061-rotate-list
0141-linked-list-cycle
0160-intersection-of-two-linked-lists
0206-reverse-linked-list
0234-palindrome-linked-list
0908-middle-of-the-linked-list

Stack

0042-trapping-rain-water
0234-palindrome-linked-list
1021-remove-outermost-parentheses

Monotonic Stack

0042-trapping-rain-water

Combinatorics

0062-unique-paths

Database

0197-rising-temperature
1757-recyclable-and-low-fat-products

Greedy

1903-largest-odd-number-in-string

String Matching

0796-rotate-string

Heap (Priority Queue)

0451-sort-characters-by-frequency

Bucket Sort

0451-sort-characters-by-frequency

Trie

0014-longest-common-prefix