LeetCode Solutions

서울시립대 알고리즘 소모임 AL林의 LeetCode 풀이 저장소입니다.

기여하는 방법(2021.01.26. 수정)

링크

2021.01.18.(월) ~ 2021.02.21.(일)에 기여를 많이하면 상품을 드립니다.

Ranking

2021년 02월 23일 23시 27분에 마지막으로 업데이트된 순위입니다.

(Event 1) 가장 꾸준히 기여한 사람

#	User Name	Points
1	kir3i	30
2	hyun gyu	29
3	YongjoonSeo	14
4	fivestar1103	8
5	moran991231	7
6	Spoof-UoS	3
7	Moonki Choi	2
8	sally0226	2
9	mulmuri	2
10	zeze1004	2

(Event 2) 모든 난이도에 가장 많이 기여한 사람

#	User Name	Points
1	kir3i	122
2	YongjoonSeo	65
3	hyun gyu	46
4	moran991231	20
5	Spoof-UoS	9
6	zeze1004	9
7	fivestar1103	7
8	Moonki Choi	4
9	sally0226	4
10	mulmuri	3

(Event 3) Medium, Hard 난이도에 가장 많이 기여한 사람

#	User Name	Points
1	kir3i	92
2	YongjoonSeo	52
3	hyun gyu	28
4	moran991231	18
5	fivestar1103	7
6	sally0226	4
7	mulmuri	2
8	Spoof-UoS	1

Algorithms

#	Title	Solutions	Analyses	Difficulty	Note
1	Two Sum	cpp, js, py, py	md	Easy
2	Add Two Numbers	cpp, java		Medium
3	Longest Substring Without Repeating Characters	cpp, cpp, java	md, md	Medium
5	Longest Palindromic Substring	java	md	Medium
6	ZigZag Conversion	cpp, java, jpg	md, md	Medium
7	Reverse Integer	java, py		Easy
9	Palindrome Number	cpp, py		Easy
13	Roman to Integer	cpp		Easy
17	Letter Combinations of a Phone Number	cpp		Medium
20	Valid Parentheses	py		Easy
23	Merge k Sorted Lists	java	md	Hard
34	Find First and Last Position of Element in Sorted Array	java	md	Medium
37	Sudoku Solver	java, py		Hard
39	Combination Sum	cpp, py		Medium
42	Trapping Rain Water	py, py		Hard
46	Permutations	cpp, py		Medium
50	Pow(x, n)	py		Medium
51	N-Queens	py		Hard
52	N-Queens II	py		Hard
56	Merge Intervals	js, py	md	Medium
60	Permutation Sequence	c		Hard
61	Rotate List	java		Medium
62	Unique Paths	java		Medium
63	Unique Paths II	java	md	Medium
65	Valid Number	java		Hard
67	Add Binary	java		Easy
74	Search a 2D Matrix	java		Medium
75	Sort Colors	js		Medium
77	Combinations	cpp		Medium
78	Subsets	cpp		Medium
84	Largest Rectangle in Histogram	py		Hard
88	Merge Sorted Array	js		Easy
89	Gray Code	java		Medium
92	Reverse Linked List II	cpp		Medium
94	Binary Tree Inorder Traversal	py	md	Medium
97	Interleaving String	py	md	Hard
102	Binary Tree Level Order Traversal	py	md	Medium
103	Binary Tree Zigzag Level Order Traversal	py	md	Medium
104	Maximum Depth of Binary Tree	cpp		Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	cpp		Medium
107	Binary Tree Level Order Traversal II	py	md	Easy
108	Convert Sorted Array to Binary Search Tree	cpp		Easy
110	Balanced Binary Tree	cpp		Easy
111	Minimum Depth of Binary Tree	py	md	Easy
125	Valid Palindrome	c, py, py	md	Easy
130	Surrounded Regions	py	md	Medium
144	Binary Tree Preorder Traversal	py	md	Medium
145	Binary Tree Postorder Traversal	py	md	Medium
147	Insertion Sort List	js		Medium
172	Factorial Trailing Zeroes	py		Easy
179	Largest Number	js		Medium
199	Binary Tree Right Side View	py	md	Medium
200	Number of Islands	cpp, py	md	Medium
202	Happy Number	py		Easy
206	Reverse Linked List	cpp, cpp	md	Easy
207	Course Schedule	cpp		Medium
208	Implement Trie (Prefix Tree)	cpp		Medium
215	Kth Largest Element in an Array	cpp	md	Medium
217	Contains Duplicate	py		Easy
226	Invert Binary Tree	cpp, js		Easy
231	Power of Two	py		Easy
242	Valid Anagram	js		Easy
297	Serialize and Deserialize Binary Tree	cpp		Hard
310	Minimum Height Trees	cpp		Medium
316	Remove Duplicate Letters	cpp		Medium
326	Power of Three	py, py	md	Easy
332	Reconstruct Itinerary	cpp		Medium
342	Power of Four	py		Easy
344	Reverse String	cpp, py, py	md	Easy
412	Fizz Buzz	cpp, java, py	md	Easy
429	N-ary Tree Level Order Traversal	py	md	Medium
454	4Sum II	py	md	Medium
515	Find Largest Value in Each Tree Row	py	md	Medium
538	Convert BST to Greater Tree	py	md	Medium
542	01 Matrix	py	md	Medium
543	Diameter of Binary Tree	cpp		Easy
547	Number of Provinces	py	md	Medium
559	Maximum Depth of N-ary Tree	py	md	Easy
561	Array Partition I	js		Easy
617	Merge Two Binary Trees	cpp		Easy
654	Maximum Binary Tree	py	md	Medium
684	Redundant Connection	py	md	Medium
687	Longest Univalue Path	cpp		Medium
701	Insert into a Binary Search Tree	cpp, java, py	md	Medium
739	Daily Temperatures	cpp		Medium
743	Network Delay Time	cpp, py	md	Medium
763	Partition Labels	cpp, py	md	Medium
771	Jewels and Stones	cpp		Easy
783	Minimum Distance Between BST Nodes	cpp		Easy
787	Cheapest Flights Within K Stops	cpp		Medium
791	Custom Sort String	py	md	Medium
797	All Paths From Source to Target	cpp, py	md	Medium
807	Max Increase to Keep City Skyline	py	md	Medium
827	Making A Large Island	py	md	Hard
890	Find and Replace Pattern	cpp, java, py	md	Medium
912	Sort an Array	js		Medium
921	Minimum Add to Make Parentheses Valid	cpp, java, py	md	Medium
925	Long Pressed Name	py	md	Easy
938	Range Sum of BST	cpp		Easy
945	Minimum Increment to Make Array Unique	py	md	Medium
950	Reveal Cards In Increasing Order	cpp, java, py	md	Medium
973	K Closest Points to Origin	cpp		Medium
990	Satisfiability of Equality Equations	py	md	Medium
994	Rotting Oranges	py	md	Medium
1008	Construct Binary Search Tree from Preorder Traversal	cpp, py	md	Medium
1038	Binary Search Tree to Greater Sum Tree	cpp, py	md	Medium
1091	Shortest Path in Binary Matrix	py	md	Medium
1108	Defanging an IP Address	py	md	Easy
1161	Maximum Level Sum of a Binary Tree	py	md	Medium
1162	As Far from Land as Possible	py	md	Medium
1261	Find Elements in a Contaminated Binary Tree	cpp, java, py	md	Medium
1282	Group the People Given the Group Size They Belong To	py	md	Medium
1288	Remove Covered Intervals	py	md	Medium
1302	Deepest Leaves Sum	py	md	Medium
1305	All Elements in Two Binary Search Trees	cpp, py	md	Medium
1310	XOR Queries of a Subarray	cpp		Medium
1315	Sum of Nodes with Even-Valued Grandparent	py	md	Medium
1325	Delete Leaves With a Given Value	cpp, java, py	md	Medium
1329	Sort the Matrix Diagonally	py	md	Medium
1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance	py	md	Medium
1342	Number of Steps to Reduce a Number to Zero	cpp, java, py	md	Easy
1347	Minimum Number of Steps to Make Two Strings Anagram	cpp, java, py	md	Medium
1365	How Many Numbers Are Smaller Than the Current Number	cpp, java, py	md	Easy
1379	Find a Corresponding Node of a Binary Tree in a Clone of That Tree	py	md	Medium
1381	Design a Stack With Increment Operation	cpp, java, py	md	Medium
1382	Balance a Binary Search Tree	cpp, py	md	Medium
1395	Count Number of Teams	py	md	Medium
1409	Queries on a Permutation With Key	py	md	Medium
1470	Shuffle the Array	py	md	Easy
1480	Running Sum of 1d Array	py	md	Easy
1512	Number of Good Pairs	py	md	Easy
1528	Shuffle String	cpp, java, py	md	Easy
1544	Make The String Great	py	md	Easy
1551	Minimum Operations to Make Array Equal	cpp, py	md	Medium
1557	Minimum Number of Vertices to Reach All Nodes	cpp, java, py	md	Medium
1561	Maximum Number of Coins You Can Get	cpp, py	md	Medium
1603	Design Parking System	cpp, java, py	md	Easy
1630	Arithmetic Subarrays	cpp, py	md	Medium
1637	Widest Vertical Area Between Two Points Containing No Points	py	md	Medium
1641	Count Sorted Vowel Strings	cpp, py	md	Medium
1669	Merge In Between Linked Lists	cpp, py	md	Medium
1672	Richest Customer Wealth	py	md	Easy
1689	Partitioning Into Minimum Number Of Deci-Binary Numbers	py	md	Medium
1720	Decode XORed Array	cpp, java, py	md	Easy
1725	Number Of Rectangles That Can Form The Largest Square	py	md	Easy

Database

#	Title	Solutions	Analyses	Difficulty	Note

Shell

#	Title	Solutions	Analyses	Difficulty	Note

Concurrency

#	Title	Solutions	Analyses	Difficulty	Note