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[Leetcode] Top interview problems on Leetcode

Published: at 02:07 AM (7 min read)

最近發現 Leetcode 改版了,原來在 ProblemsTop interview questions 的篩選分類已經不見,只剩下 Explore 裡面的 Top interview questions。但是菜雞我刷到一半啊啊啊!!!只好自己備份一下原來的 Top interview questions 清單了 🫠

Top interview problems on Leetcode

題號 題目名稱 難度
1 Two Sum Easy
2 Add Two Numbers Medium
3 Longest Substring Without Repeating Characters Medium
4 Median of Two Sorted Arrays Hard
5 Longest Palindromic Substring Medium
7 Reverse Integer Medium
8 String to Integer (atoi) Medium
10 Regular Expression Matching Hard
11 Container With Most Water Medium
13 Roman to Integer Easy
14 Longest Common Prefix Easy
15 3Sum Medium
17 Letter Combinations of a Phone Number Medium
19 Remove Nth Node From End of List Medium
20 Valid Parentheses Easy
21 Merge Two Sorted Lists Easy
22 Generate Parentheses Medium
23 Merge k Sorted Lists Hard
26 Remove Duplicates from Sorted Array Easy
28 Find the Index of the First Occurrence in a String Easy
29 Divide Two Integers Medium
33 Search in Rotated Sorted Array Medium
34 Find First and Last Position of Element in Sorted Array Medium
36 Valid Sudoku Medium
38 Count and Say Medium
41 First Missing Positive Hard
42 Trapping Rain Water Hard
44 Wildcard Matching Hard
46 Permutations Medium
48 Rotate Image Medium
49 Group Anagrams Medium
50 Pow(x, n) Medium
53 Maximum Subarray Medium
54 Spiral Matrix Medium
55 Jump Game Medium
56 Merge Intervals Medium
62 Unique Paths Medium
66 Plus One Easy
69 Sqrt(x) Easy
70 Climbing Stairs Easy
73 Set Matrix Zeroes Medium
75 Sort Colors Medium
76 Minimum Window Substring Hard
78 Subsets Medium
79 Word Search Medium
84 Largest Rectangle in Histogram Hard
88 Merge Sorted Array Easy
91 Decode Ways Medium
94 Binary Tree Inorder Traversal Medium
98 Validate Binary Search Tree Medium
101 Symmetric Tree Easy
102 Binary Tree Level Order Traversal Medium
103 Binary Tree Zigzag Level Order Traversal Medium
104 Maximum Depth of Binary Tree Easy
105 Construct Binary Tree from Preorder and Inorder Traversal Medium
108 Convert Sorted Array to Binary Search Tree Easy
116 Populating Next Right Pointers in Each Node Medium
118 Pascal's Triangle Easy
121 Best Time to Buy and Sell Stock Easy
122 Best Time to Buy and Sell Stock II Medium
124 Binary Tree Maximum Path Sum Hard
125 Valid Palindrome Easy
127 Word Ladder Hard
128 Longest Consecutive Sequence Medium
130 Surrounded Regions Medium
131 Palindrome Partitioning Medium
134 Gas Station Medium
136 Single Number Easy
138 Copy List with Random Pointer Medium
139 Word Break Medium
140 Word Break II Hard
141 Linked List Cycle Easy
146 LRU Cache Medium
148 Sort List Medium
149 Max Points on a Line Hard
150 Evaluate Reverse Polish Notation Medium
152 Maximum Product Subarray Medium
155 Min Stack Medium
160 Intersection of Two Linked Lists Easy
162 Find Peak Element Medium
163 Missing Ranges Medium
166 Fraction to Recurring Decimal Medium
169 Majority Element Easy
171 Excel Sheet Column Number Easy
172 Factorial Trailing Zeroes Medium
179 Largest Number Medium
189 Rotate Array Medium
190 Reverse Bits Easy
191 Number of 1 Bits Easy
198 House Robber Medium
200 Number of Islands Medium
202 Happy Number Easy
204 Count Primes Medium
206 Reverse Linked List Easy
207 Course Schedule Medium
208 Implement Trie (Prefix Tree) Medium
210 Course Schedule II Medium
212 Word Search II Hard
215 Kth Largest Element in an Array Medium
217 Contains Duplicate Easy
218 The Skyline Problem Hard
227 Basic Calculator II Medium
230 Kth Smallest Element in a BST Medium
234 Palindrome Linked List Easy
236 Lowest Common Ancestor of a Binary Tree Medium
237 Delete Node in a Linked List Medium
238 Product of Array Except Self Medium
239 Sliding Window Maximum Hard
240 Search a 2D Matrix II Medium
242 Valid Anagram Easy
251 Flatten 2D Vector Medium
253 Meeting Rooms II Medium
268 Missing Number Easy
269 Alien Dictionary Hard
277 Find the Celebrity Medium
285 Inorder Successor in BST Medium
308 Range Sum Query 2D - Mutable Hard
340 Longest Substring with At Most K Distinct Characters Hard
348 Design Tic-Tac-Toe Medium

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