LeetCodeで解くべき120問 (2024年版)

	A	B	C	D	G
1	Type	Difficulty	Name	Video Explanation Link	考え方 - NeetCode 150をベース https://neetcode.io/practice - Heap/DPを減らした（DPはほぼ出ない(Googleなどごく一部の会社のみ), Heapはたまに聞かれるが頻出でない） - Advanced Graphもほぼ出ないので減らした（ダイクストラ法とかほぼ聞かれない） - 最近の傾向としてクラス設計やシステムデザイン要素を含む"Design ~~"を追加 - Array/Backtrack/Math/BinSearch/Tree/Two Pointersなどは引き続きよく出るので少し問題を追加

2	1D Dynamic	Medium	Stone Game	Stone Game - Leetcode 877 - Python
3	1D Dynamic	Medium	Word Break	Word Break - Dynamic Programming - Leetcode 139 - Python
4	1D Dynamic	Easy	Climbing Stairs	Climbing Stairs - Dynamic Programming - Leetcode 70 - Python
5	1D Dynamic	Medium	Coin Change	Coin Change - Dynamic Programming Bottom Up - Leetcode 322
6	1D Dynamic	Medium	Decode Ways	Decode Ways - Dynamic Programming - Leetcode 91 - Python
7	1D Dynamic	Medium	House Robber	House Robber - Leetcode 198 - Python Dynamic Programming
8	1D Dynamic	Medium	Longest Palindromic Substring	Longest Palindromic Substring - Python - Leetcode 5
9	2D Dynamic	Medium	Longest Common Subsequence	Longest Common Subsequence - Dynamic Programming - Leetcode 1143
10	Array	Medium	Longest Increasing Subsequence	Longest Increasing Subsequence - Dynamic Programming - Leetcode 300
11	Array	Easy	Best Time to Buy and Sell Stock	Sliding Window: Best Time to Buy and Sell Stock - Leetcode 121 - Python - YouTube
12	Array	Easy	Valid Anagram	Valid Anagram - Leetcode 242 - Python
13	Array	Medium	Container with Most Water	Container with Most Water - Leetcode 11 - Python
14	Array	Medium	Insert Delete GetRandom O(1)	Insert Delete GetRandom O(1) - Leetcode 380 - Python
15	Array	Medium	Product of Array Except Self	Product of Array Except Self - Leetcode 238 - Python - YouTube
16	Array	Medium	Maximum Product Subarray	Maximum Product Subarray - Dynamic Programming - Leetcode 152
17	Array	Easy	Contains Duplicate	Contains Duplicate - Leetcode 217 - Python - YouTube
18	Array	Easy	Two Sum	Two Sum - Leetcode 1 - HashMap - Python - YouTube
19	Array	Medium	Encode and Decode Strings	Encode and Decode Strings - Leetcode 271 - Python - YouTube
20	Array	Medium	Group Anagrams	Group Anagrams - Categorize Strings by Count - Leetcode 49
21	Array	Hard	First Missing Positive	First Missing Positive - Leetcode 41 - Python
22	Array	Medium	Kth Largest Element in an Array	Kth Largest Element in an Array - Quick Select - Leetcode 215 - Python
23	Array	Medium	Subarray Sum Equals K	Subarray Sum Equals K - Prefix Sums - Leetcode 560 - Python
24	Backtrack	Medium	Permutations	Backtracking: Permutations - Leetcode 46 - Python
25	Backtrack	Medium	Combination Sum	Combination Sum - Backtracking - Leetcode 39 - Python
26	Backtrack	Medium	Word Search	Word Search - Backtracking - Leetcode 79 - Python
27	Backtrack	Medium	Letter Combinations of a Phone Number	Letter Combinations of a Phone Number - Backtracking - Leetcode 17
28	Backtrack	Medium	Subsets II	Subsets II - Backtracking - Leetcode 90 - Python
29	Backtrack	Medium	Restore IP Addresses	Restore IP Addresses - Leetcode 93 - Python
30	Backtrack	Hard	Count All Valid Pickup and Delivery Options	Count all Valid Pickup and Delivery Options - Leetcode 1359 - Python
31	Backtrack	Hard	Word Break II	WORD BREAK II \| LEETCODE # 140 \| PYTHON DFS SOLUTION
32	BinSearch	Medium	Time Based Key Value Store	Time Based Key-Value Store - Leetcode 981 - Python
33	BinSearch	Medium	Koko Eating Bananas	Koko Eating Bananas - Binary Search - Leetcode 875 - Python
34	BinSearch	Medium	Find Minimum in Rotated Sorted Array	Find Minimum in Rotated Sorted Array - Binary Search - Leetcode 153 - Python
35	BinSearch	Medium	Search a 2D Matrix	Search a 2D Matrix - Leetcode 74 - Python
36	BinSearch	Medium	Find Peak Element	Find Peak Element - Leetcode 162 - Python
37	BinSearch	Medium	Random Pick with Weight	RANDOM PICK WITH WEIGHT \| LEETCODE # 528 \| PYTHON BINARY SEARCH SOLUTION
38	Bit	Easy	Reverse Bits	Reverse Bits - Binary - Leetcode 190 - Python
39	Bit	Easy	Number of 1 Bits	Number of 1 Bits - Leetcode 191 - Python
40	Bit	Easy	Missing Number	Missing Number - Blind 75 - Leetcode 268 - Python
41	Bit	Easy	Counting Bits	Counting Bits - Dynamic Programming - Leetcode 338 - Python
42	Bit	Easy	Single Number	Single Number - Leetcode 136 - Python
43	Bit	Medium	Sum of Two Integers	Sum of Two Integers - Leetcode 371 - Java
44	Design	Medium	LRU Cache	LRU Cache - Twitch Interview Question - Leetcode 146
45	Design	Medium	Design Browser History	Design Browser History - Leetcode 1472 - Python
46	Design	Medium	Design File System	No Video
47	Design	Medium	Design Hit Counter	DESIGN HIT COUNTER \| LEETCODE 362 \| PYTHON BINARY SEARCH SOLUTION
48	Design	Medium	Design In-Memory File System	DESIGN IN-MEMORY FILE SYSTEM \| LEETCODE # 588 \| PYTHON SOLUTION
49	Design	Hard	All O`one Data Structure	No Video
50	Graph	Hard	Word Ladder	Word Ladder - Breadth First Search - Leetcode 127 - Python
51	Graph	Hard	Alien Dictionary	Alien Dictionary - Topological Sort - Leetcode 269 - Python
52	Graph	Medium	Clone Graph	Clone Graph - Depth First Search - Leetcode 133
53	Graph	Medium	Redundant Connection	Redundant Connection - Union Find - Leetcode 684 - Python
54	Graph	Medium	Walls And Gates	Walls and Gates - Multi-Source BFS - Leetcode 286 - Python
55	Graph	Medium	Surrounded Regions	Surrounded Regions - Graph - Leetcode 130 - Python
56	Graph	Medium	Graph Valid Tree	Graph Valid Tree - Leetcode 261 - Python
57	Graph	Medium	Rotting Orages	Rotting Oranges - Leetcode 994 - Python
58	Graph	Medium	Number of Islands	NUMBER OF ISLANDS - Leetcode 200 - Python
59	Graph	Medium	Max Area of Island	Max Area of Island - Leetcode 695 - Python
60	Graph	Medium	Number of Connected Components in Undirected Graph	Number of Connected Components in an Undirected Graph - Union Find - Leetcode 323 - Python
61	Graph	Medium	Course Schedule	Course Schedule - Graph Adjacency List - Leetcode 207
62	Graph	Medium	Longest Consecutive Sequence	Leetcode 128 - LONGEST CONSECUTIVE SEQUENCE - YouTube
63	Heap	Medium	Design Twitter	Design Twitter - Leetcode 355 - Python
64	Heap	Easy	Kth Largest Element In a Stream	Kth Largest Element in a Stream - Leetcode 703 - Python
65	Heap	Hard	Find Median from Data Stream	Find Median from Data Stream - Heap & Priority Queue - Leetcode 295
66	Heap	Medium	Top K Frequent Elements	Top K Frequent Elements - Bucket Sort - Leetcode 347 - Python
67	Heap	Medium	K Closest Points to Origin	K Closest Points to Origin - Heap / Priority Queue - Leetcode 973 - Python
68	Heap	Hard	Merge K Sorted Lists	Merge K Sorted Lists - Leetcode 23 - Python
69	Interval	Medium	Meeting Rooms II	Meeting Rooms II - Leetcode 253 - Python
70	Interval	Medium	Non-overlapping Intervals	Non-Overlapping Intervals - Leetcode 435 - Python
71	Interval	Medium	Merge Intervals	Merge Intervals - Sorting - Leetcode 56
72	Interval	Easy	Meeting Rooms	Meeting Rooms - Leetcode 252 - Python
73	Interval	Medium	Insert Interval	Insert Interval - Leetcode 57 - Python
74	Linked List	Medium	Reorder List	Linkedin Interview Question - Reorder List - Leetcode 143 - Python
75	Linked List	Medium	Sort List	Sort List - Merge Sort - Leetcode 148
76	Linked List	Medium	Remove Nth Node From End of List	Remove Nth Node from End of List - Oracle Interview Question - Leetcode 19
77	Linked List	Easy	Merge Two Sorted Lists	Merge Two Sorted Lists - Leetcode 21 - Python
78	Linked List	Easy	Detect Cycle in a Linked List	Linked List Cycle - Floyd's Tortoise and Hare - Leetcode 141 - Python
79	Linked List	Easy	Reverse a Linked List	Reverse Linked List - Iterative AND Recursive - Leetcode 206 - Python
80	Math	Medium	Happy Number	Happy Number - Leetcode 202 - Python
81	Math	Medium	Rotate Image	Rotate Image - Matrix - Leetcode 48
82	Math	Easy	Pow(x, n)	Pow(x, n) - X to the power of N - Leetcode 50 - Python
83	Math	Easy	Plus One	Plus One - Leetcode 66 - Python
84	Math	Medium	ZigZag Conversion	ZigZag Conversion - Leetcode 6 - Python
85	Math	Medium	Spiral Matrix	Spiral Matrix - Microsoft Interview Question - Leetcode 54
86	Math	Easy	Roman to Integer	Roman to Integer - Leetcode 13 - Python
87	Math	Medium	Set Matrix Zeroes	Set Matrix Zeroes - In-place - Leetcode 73
88	Math	Medium	Detect Squares	Detect Squares - Leetcode Weekly Contest - Problem 2013 - Python
89	Math	Medium	Perfect Number	No Video
90	Sliding Window	Hard	Minimum Window Substring	Minimum Window Substring - Airbnb Interview Question - Leetcode 76
91	Sliding Window	Medium	Longest Substring w/o Repeating Characters	Longest Substring Without Repeating Characters - Leetcode 3 - Python
92	Sliding Window	Medium	Longest Repeating Character Replacement	Longest Repeating Character Replacement - Leetcode 424 - Python
93	Stack	Medium	Asteroid Collision	Asteroid Collision - Stack - Leetcode 735
94	Stack	Medium	Generate Parentheses	Generate Parentheses - Stack - Leetcode 22
95	Stack	Easy	Valid Parentheses	Valid Parentheses - Stack - Leetcode 20 - Python
96	Stack	Medium	Min Stack	Design Min Stack - Amazon Interview Question - Leetcode 155 - Python
97	Stack	Medium	Daily Temperatures	Daily Temperatures - Monotonic Stack - Leetcode 739 - Python
98	Stack	Medium	Basic Calculator II	BASIC CALCULATOR II \| LEETCODE 227 \| PYTHON SOLUTION
99	Tree	Easy	Lowest Common Ancestor of BST	Lowest Common Ancestor of a Binary Search Tree - Leetcode 235 - Python
100	Tree	Medium	Path Sum II	No Video