LeetCode

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

LeetCode Topics

Array

0001-two-sum
0014-longest-common-prefix
0026-remove-duplicates-from-sorted-array
0027-remove-element
0035-search-insert-position
0066-plus-one
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0136-single-number
0268-missing-number
0283-move-zeroes
0414-third-maximum-number
0485-max-consecutive-ones
0792-binary-search
0948-sort-an-array
1168-duplicate-zeros
1476-count-negative-numbers-in-a-sorted-matrix
1482-how-many-numbers-are-smaller-than-the-current-number
2048-build-array-from-permutation
2215-finding-3-digit-even-numbers
2942-find-words-containing-character

Hash Table

0001-two-sum
0013-roman-to-integer
0141-linked-list-cycle
0160-intersection-of-two-linked-lists
0205-isomorphic-strings
0242-valid-anagram
0268-missing-number
1482-how-many-numbers-are-smaller-than-the-current-number
2215-finding-3-digit-even-numbers
3541-find-most-frequent-vowel-and-consonant

Math

0002-add-two-numbers
0007-reverse-integer
0009-palindrome-number
0013-roman-to-integer
0066-plus-one
0067-add-binary
0069-sqrtx
0070-climbing-stairs
0231-power-of-two
0258-add-digits
0263-ugly-number
0268-missing-number
0326-power-of-three
0342-power-of-four
0412-fizz-buzz
1013-fibonacci-number
1903-largest-odd-number-in-string

String

0013-roman-to-integer
0014-longest-common-prefix
0020-valid-parentheses
0028-find-the-index-of-the-first-occurrence-in-a-string
0058-length-of-last-word
0067-add-binary
0125-valid-palindrome
0205-isomorphic-strings
0242-valid-anagram
0344-reverse-string
0412-fizz-buzz
0541-reverse-string-ii
1221-split-a-string-in-balanced-strings
1903-largest-odd-number-in-string
2942-find-words-containing-character
3541-find-most-frequent-vowel-and-consonant

Two Pointers

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
0061-rotate-list
0088-merge-sorted-array
0125-valid-palindrome
0141-linked-list-cycle
0160-intersection-of-two-linked-lists
0234-palindrome-linked-list
0283-move-zeroes
0344-reverse-string
0541-reverse-string-ii
0908-middle-of-the-linked-list
1168-duplicate-zeros

Trie

0014-longest-common-prefix

Stack

0020-valid-parentheses
0234-palindrome-linked-list

Simulation

0067-add-binary
0258-add-digits
0412-fizz-buzz
2048-build-array-from-permutation

String Matching

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

Binary Search

0035-search-insert-position
0069-sqrtx
0268-missing-number
0792-binary-search
1476-count-negative-numbers-in-a-sorted-matrix

Linked List

0002-add-two-numbers
0019-remove-nth-node-from-end-of-list
0021-merge-two-sorted-lists
0024-swap-nodes-in-pairs
0061-rotate-list
0141-linked-list-cycle
0160-intersection-of-two-linked-lists
0203-remove-linked-list-elements
0206-reverse-linked-list
0234-palindrome-linked-list
0328-odd-even-linked-list
0838-design-linked-list
0908-middle-of-the-linked-list

Recursion

0002-add-two-numbers
0021-merge-two-sorted-lists
0024-swap-nodes-in-pairs
0203-remove-linked-list-elements
0206-reverse-linked-list
0231-power-of-two
0234-palindrome-linked-list
0326-power-of-three
0342-power-of-four
1013-fibonacci-number
2215-finding-3-digit-even-numbers

Sorting

0088-merge-sorted-array
0242-valid-anagram
0268-missing-number
0414-third-maximum-number
0948-sort-an-array
1482-how-many-numbers-are-smaller-than-the-current-number
2215-finding-3-digit-even-numbers

Bit Manipulation

0067-add-binary
0136-single-number
0231-power-of-two
0268-missing-number
0342-power-of-four

Dynamic Programming

0070-climbing-stairs
0121-best-time-to-buy-and-sell-stock
1013-fibonacci-number

Memoization

0070-climbing-stairs
1013-fibonacci-number

Number Theory

0258-add-digits

Matrix

1476-count-negative-numbers-in-a-sorted-matrix

Enumeration

2215-finding-3-digit-even-numbers

Divide and Conquer

0948-sort-an-array

Heap (Priority Queue)

0948-sort-an-array

Merge Sort

0948-sort-an-array

Bucket Sort

0948-sort-an-array

Radix Sort

0948-sort-an-array

Counting Sort

0948-sort-an-array
1221-split-a-string-in-balanced-strings
1482-how-many-numbers-are-smaller-than-the-current-number
3541-find-most-frequent-vowel-and-consonant

Design

0838-design-linked-list

Greedy

1221-split-a-string-in-balanced-strings
1903-largest-odd-number-in-string