#Repository for saving LeetCode questions

LeetCode Topics

Array

Problem Name	Difficulty
0153-find-minimum-in-rotated-sorted-array	Medium
0154-find-minimum-in-rotated-sorted-array-ii	Hard
0347-top-k-frequent-elements	Medium
1146-snapshot-array	Medium
1198-find-smallest-common-element-in-all-rows	Medium
1855-maximum-distance-between-a-pair-of-values	Medium
2061-number-of-spaces-cleaning-robot-cleaned	Medium
2751-robot-collisions	Hard
3111-minimum-rectangles-to-cover-points	Medium
3839-number-of-prefix-connected-groups	Medium

Stack

Problem Name	Difficulty
2751-robot-collisions	Hard

Sorting

Problem Name	Difficulty
0347-top-k-frequent-elements	Medium
2751-robot-collisions	Hard
3111-minimum-rectangles-to-cover-points	Medium

Simulation

Problem Name	Difficulty
0657-robot-return-to-origin	Easy
2061-number-of-spaces-cleaning-robot-cleaned	Medium
2075-decode-the-slanted-ciphertext	Medium
2751-robot-collisions	Hard

Hash Table

Problem Name	Difficulty
0347-top-k-frequent-elements	Medium
1146-snapshot-array	Medium
1198-find-smallest-common-element-in-all-rows	Medium
3839-number-of-prefix-connected-groups	Medium

Divide and Conquer

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

Heap (Priority Queue)

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

Bucket Sort

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

Counting

Problem Name	Difficulty
0347-top-k-frequent-elements	Medium
1198-find-smallest-common-element-in-all-rows	Medium
3839-number-of-prefix-connected-groups	Medium

Quickselect

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

String

Problem Name	Difficulty
0657-robot-return-to-origin	Easy
2075-decode-the-slanted-ciphertext	Medium
3839-number-of-prefix-connected-groups	Medium

Two Pointers

Problem Name	Difficulty
0086-partition-list	Medium
1855-maximum-distance-between-a-pair-of-values	Medium

Binary Search

Problem Name	Difficulty
0153-find-minimum-in-rotated-sorted-array	Medium
0154-find-minimum-in-rotated-sorted-array-ii	Hard
1146-snapshot-array	Medium
1198-find-smallest-common-element-in-all-rows	Medium
1855-maximum-distance-between-a-pair-of-values	Medium

Linked List

Problem Name	Difficulty
0086-partition-list	Medium

Matrix

Problem Name	Difficulty
1198-find-smallest-common-element-in-all-rows	Medium
2061-number-of-spaces-cleaning-robot-cleaned	Medium

Design

Problem Name	Difficulty
1146-snapshot-array	Medium

Math

Problem Name	Difficulty
2240-number-of-ways-to-buy-pens-and-pencils	Medium

Enumeration

Problem Name	Difficulty
2240-number-of-ways-to-buy-pens-and-pencils	Medium

Greedy

Problem Name	Difficulty
3111-minimum-rectangles-to-cover-points	Medium