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

LeetCode Topics

Array

0004-median-of-two-sorted-arrays
0026-remove-duplicates-from-sorted-array
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0048-rotate-image
0054-spiral-matrix
0059-spiral-matrix-ii
0066-plus-one
0074-search-a-2d-matrix
0081-search-in-rotated-sorted-array-ii
0154-find-minimum-in-rotated-sorted-array-ii
0162-find-peak-element
0167-two-sum-ii-input-array-is-sorted
0189-rotate-array
0240-search-a-2d-matrix-ii
0349-intersection-of-two-arrays
0448-find-all-numbers-disappeared-in-an-array
0485-max-consecutive-ones
0523-continuous-subarray-sum
0560-subarray-sum-equals-k
0645-set-mismatch
0747-largest-number-at-least-twice-of-others
0867-transpose-matrix
0875-koko-eating-bananas
0974-subarray-sums-divisible-by-k
1365-how-many-numbers-are-smaller-than-the-current-number
1436-destination-city
1441-build-an-array-with-stack-operations
1470-shuffle-the-array
1700-number-of-students-unable-to-eat-lunch
1752-check-if-array-is-sorted-and-rotated
1929-concatenation-of-array
2154-keep-multiplying-found-values-by-two
2226-maximum-candies-allocated-to-k-children
2549-count-distinct-numbers-on-board

Math

0007-reverse-integer
0013-roman-to-integer
0048-rotate-image
0066-plus-one
0069-sqrtx
0189-rotate-array
0202-happy-number
0523-continuous-subarray-sum
1688-count-of-matches-in-tournament
2549-count-distinct-numbers-on-board
2807-insert-greatest-common-divisors-in-linked-list

Two Pointers

0019-remove-nth-node-from-end-of-list
0026-remove-duplicates-from-sorted-array
0061-rotate-list
0125-valid-palindrome
0167-two-sum-ii-input-array-is-sorted
0189-rotate-array
0202-happy-number
0349-intersection-of-two-arrays
0392-is-subsequence
0876-middle-of-the-linked-list
2095-delete-the-middle-node-of-a-linked-list

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
0069-sqrtx
0074-search-a-2d-matrix
0081-search-in-rotated-sorted-array-ii
0154-find-minimum-in-rotated-sorted-array-ii
0162-find-peak-element
0167-two-sum-ii-input-array-is-sorted
0240-search-a-2d-matrix-ii
0349-intersection-of-two-arrays
0875-koko-eating-bananas
2226-maximum-candies-allocated-to-k-children

Divide and Conquer

0004-median-of-two-sorted-arrays
0240-search-a-2d-matrix-ii

String

0008-string-to-integer-atoi
0013-roman-to-integer
0020-valid-parentheses
0125-valid-palindrome
0242-valid-anagram
0392-is-subsequence
1436-destination-city
3340-check-balanced-string

Dynamic Programming

0392-is-subsequence

Matrix

0048-rotate-image
0054-spiral-matrix
0059-spiral-matrix-ii
0074-search-a-2d-matrix
0240-search-a-2d-matrix-ii
0867-transpose-matrix

Simulation

0054-spiral-matrix
0059-spiral-matrix-ii
0867-transpose-matrix
1441-build-an-array-with-stack-operations
1688-count-of-matches-in-tournament
1700-number-of-students-unable-to-eat-lunch
1929-concatenation-of-array
2154-keep-multiplying-found-values-by-two
2549-count-distinct-numbers-on-board

Hash Table

0013-roman-to-integer
0202-happy-number
0242-valid-anagram
0349-intersection-of-two-arrays
0448-find-all-numbers-disappeared-in-an-array
0523-continuous-subarray-sum
0560-subarray-sum-equals-k
0645-set-mismatch
0974-subarray-sums-divisible-by-k
1365-how-many-numbers-are-smaller-than-the-current-number
1436-destination-city
2154-keep-multiplying-found-values-by-two
2549-count-distinct-numbers-on-board

Sorting

0242-valid-anagram
0349-intersection-of-two-arrays
0645-set-mismatch
0747-largest-number-at-least-twice-of-others
1365-how-many-numbers-are-smaller-than-the-current-number
2154-keep-multiplying-found-values-by-two

Linked List

0019-remove-nth-node-from-end-of-list
0021-merge-two-sorted-lists
0061-rotate-list
0083-remove-duplicates-from-sorted-list
0206-reverse-linked-list
0237-delete-node-in-a-linked-list
0876-middle-of-the-linked-list
2095-delete-the-middle-node-of-a-linked-list
2807-insert-greatest-common-divisors-in-linked-list

Recursion

0021-merge-two-sorted-lists
0206-reverse-linked-list

Number Theory

2807-insert-greatest-common-divisors-in-linked-list

Stack

0020-valid-parentheses
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0155-min-stack
0225-implement-stack-using-queues
1441-build-an-array-with-stack-operations
1700-number-of-students-unable-to-eat-lunch

Design

0155-min-stack
0225-implement-stack-using-queues

Queue

0225-implement-stack-using-queues
1700-number-of-students-unable-to-eat-lunch

Prefix Sum

0523-continuous-subarray-sum
0560-subarray-sum-equals-k
0974-subarray-sums-divisible-by-k

Bit Manipulation

0645-set-mismatch

Counting Sort

1365-how-many-numbers-are-smaller-than-the-current-number

Tree

0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal

Depth-First Search

0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal

Binary Tree

0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal