DSA-questions

Collection of DSA questions that i solved; Created using LeetHub-3.0

LeetCode Topics

Array

Problem Name	Difficulty
0001-two-sum	Easy
0011-container-with-most-water	Medium
0014-longest-common-prefix	Easy
0026-remove-duplicates-from-sorted-array	Easy
0033-search-in-rotated-sorted-array	Medium
0042-trapping-rain-water	Hard
0075-sort-colors	Medium
0081-search-in-rotated-sorted-array-ii	Medium
0121-best-time-to-buy-and-sell-stock	Easy
0128-longest-consecutive-sequence	Medium
0150-evaluate-reverse-polish-notation	Medium
0162-find-peak-element	Medium
0167-two-sum-ii-input-array-is-sorted	Medium
0238-product-of-array-except-self	Medium
0540-single-element-in-a-sorted-array	Medium
0739-daily-temperatures	Medium
0853-car-fleet	Medium
0875-koko-eating-bananas	Medium
2016-maximum-difference-between-increasing-elements	Easy
2149-rearrange-array-elements-by-sign	Medium
2348-number-of-zero-filled-subarrays	Medium

Dynamic Programming

Problem Name	Difficulty
0042-trapping-rain-water	Hard
0121-best-time-to-buy-and-sell-stock	Easy
0392-is-subsequence	Easy

Two Pointers

Problem Name	Difficulty
0011-container-with-most-water	Medium
0026-remove-duplicates-from-sorted-array	Easy
0042-trapping-rain-water	Hard
0075-sort-colors	Medium
0125-valid-palindrome	Easy
0141-linked-list-cycle	Easy
0143-reorder-list	Medium
0167-two-sum-ii-input-array-is-sorted	Medium
0392-is-subsequence	Easy
2149-rearrange-array-elements-by-sign	Medium

Simulation

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

Hash Table

Problem Name	Difficulty
0001-two-sum	Easy
0128-longest-consecutive-sequence	Medium
0141-linked-list-cycle	Easy
0242-valid-anagram	Easy

Union-Find

Problem Name	Difficulty
0128-longest-consecutive-sequence	Medium

Binary Search

Problem Name	Difficulty
0033-search-in-rotated-sorted-array	Medium
0081-search-in-rotated-sorted-array-ii	Medium
0162-find-peak-element	Medium
0167-two-sum-ii-input-array-is-sorted	Medium
0540-single-element-in-a-sorted-array	Medium
0875-koko-eating-bananas	Medium

Prefix Sum

Problem Name	Difficulty
0238-product-of-array-except-self	Medium

String

Problem Name	Difficulty
0014-longest-common-prefix	Easy
0020-valid-parentheses	Easy
0125-valid-palindrome	Easy
0242-valid-anagram	Easy
0392-is-subsequence	Easy

Math

Problem Name	Difficulty
0150-evaluate-reverse-polish-notation	Medium
2348-number-of-zero-filled-subarrays	Medium
3870-count-commas-in-range	Easy

Greedy

Problem Name	Difficulty
0011-container-with-most-water	Medium

Stack

Problem Name	Difficulty
0020-valid-parentheses	Easy
0042-trapping-rain-water	Hard
0143-reorder-list	Medium
0150-evaluate-reverse-polish-notation	Medium
0155-min-stack	Medium
0739-daily-temperatures	Medium
0853-car-fleet	Medium

Monotonic Stack

Problem Name	Difficulty
0042-trapping-rain-water	Hard
0739-daily-temperatures	Medium
0853-car-fleet	Medium

Trie

Problem Name	Difficulty
0014-longest-common-prefix	Easy

Sorting

Problem Name	Difficulty
0075-sort-colors	Medium
0242-valid-anagram	Easy
0853-car-fleet	Medium

Quicksort

Problem Name	Difficulty
0075-sort-colors	Medium

Bubble Sort

Problem Name	Difficulty
0075-sort-colors	Medium

Bracket Sequences

Problem Name	Difficulty
0020-valid-parentheses	Easy

Design

Problem Name	Difficulty
0155-min-stack	Medium

Linked List

Problem Name	Difficulty
0021-merge-two-sorted-lists	Easy
0141-linked-list-cycle	Easy
0143-reorder-list	Medium
0206-reverse-linked-list	Easy

Recursion

Problem Name	Difficulty
0021-merge-two-sorted-lists	Easy
0143-reorder-list	Medium
0206-reverse-linked-list	Easy

Floyd's Cycle Finding Algorithm

Problem Name	Difficulty
0141-linked-list-cycle	Easy