LeetCode

Collection of LeetCode questions to ace the coding interview! - Created using LeetHub-3.0

LeetCode Topics

Array

Problem Name	Difficulty
0001-two-sum	Easy
0014-longest-common-prefix	Easy
0026-remove-duplicates-from-sorted-array	Easy
0027-remove-element	Easy
0035-search-insert-position	Easy
0053-maximum-subarray	Medium
0075-sort-colors	Medium
0121-best-time-to-buy-and-sell-stock	Easy
0128-longest-consecutive-sequence	Medium
0136-single-number	Easy
0169-majority-element	Easy
0189-rotate-array	Medium
0215-kth-largest-element-in-an-array	Medium
0283-move-zeroes	Easy
0347-top-k-frequent-elements	Medium
0485-max-consecutive-ones	Easy
0744-find-smallest-letter-greater-than-target	Easy
2149-rearrange-array-elements-by-sign	Medium

Hash Table

Problem Name	Difficulty
0001-two-sum	Easy
0128-longest-consecutive-sequence	Medium
0169-majority-element	Easy
0347-top-k-frequent-elements	Medium

Divide and Conquer

Problem Name	Difficulty
0053-maximum-subarray	Medium
0169-majority-element	Easy
0215-kth-largest-element-in-an-array	Medium
0347-top-k-frequent-elements	Medium

Sorting

Problem Name	Difficulty
0075-sort-colors	Medium
0169-majority-element	Easy
0215-kth-largest-element-in-an-array	Medium
0347-top-k-frequent-elements	Medium

Heap (Priority Queue)

Problem Name	Difficulty
0215-kth-largest-element-in-an-array	Medium
0347-top-k-frequent-elements	Medium

Bucket Sort

Problem Name	Difficulty
0347-top-k-frequent-elements	Medium

Counting

Problem Name	Difficulty
0169-majority-element	Easy
0347-top-k-frequent-elements	Medium

Quickselect

Problem Name	Difficulty
0215-kth-largest-element-in-an-array	Medium
0347-top-k-frequent-elements	Medium

Math

Problem Name	Difficulty
0009-palindrome-number	Easy
0189-rotate-array	Medium

String

Problem Name	Difficulty
0014-longest-common-prefix	Easy
0028-find-the-index-of-the-first-occurrence-in-a-string	Easy
0058-length-of-last-word	Easy

Trie

Problem Name	Difficulty
0014-longest-common-prefix	Easy

Two Pointers

Problem Name	Difficulty
0026-remove-duplicates-from-sorted-array	Easy
0027-remove-element	Easy
0028-find-the-index-of-the-first-occurrence-in-a-string	Easy
0075-sort-colors	Medium
0189-rotate-array	Medium
0283-move-zeroes	Easy
2149-rearrange-array-elements-by-sign	Medium

String Matching

Problem Name	Difficulty
0028-find-the-index-of-the-first-occurrence-in-a-string	Easy

Binary Search

Problem Name	Difficulty
0035-search-insert-position	Easy
0744-find-smallest-letter-greater-than-target	Easy

Dynamic Programming

Problem Name	Difficulty
0053-maximum-subarray	Medium
0121-best-time-to-buy-and-sell-stock	Easy

Union-Find

Problem Name	Difficulty
0128-longest-consecutive-sequence	Medium

Quicksort

Problem Name	Difficulty
0075-sort-colors	Medium

Bubble Sort

Problem Name	Difficulty
0075-sort-colors	Medium

Bit Manipulation

Problem Name	Difficulty
0136-single-number	Easy

Boyer–Moore Majority Vote Algorithm

Problem Name	Difficulty
0169-majority-element	Easy

Simulation

Problem Name	Difficulty
2149-rearrange-array-elements-by-sign	Medium

Linked List

Problem Name	Difficulty
0206-reverse-linked-list	Easy

Recursion

Problem Name	Difficulty
0206-reverse-linked-list	Easy