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Problems explorer

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150 problems in this topic

# Title Topics Acceptance Pts Difficulty
1 Contains Duplicate — 20 Easy Solve
2 Valid Anagram — 20 Easy Solve
3 Two Sum — 20 Easy Solve
4 Group Anagrams — 30 Medium Solve
5 Top K Frequent Elements — 30 Medium Solve
6 Product of Array Except Self — 30 Medium Solve
7 Valid Sudoku — 30 Medium Solve
8 Encode and Decode Strings — 30 Medium Solve
9 Longest Consecutive Sequence — 30 Medium Solve
10 Valid Palindrome — 20 Easy Solve
11 Two Sum II - Input Array Is Sorted — 30 Medium Solve
12 3Sum — 30 Medium Solve
13 Container With Most Water — 30 Medium Solve
14 Trapping Rain Water — 40 Hard Solve
15 Best Time to Buy and Sell Stock — 20 Easy Solve
16 Longest Substring Without Repeating Characters — 30 Medium Solve
17 Longest Repeating Character Replacement — 30 Medium Solve
18 Permutation in String — 30 Medium Solve
19 Minimum Window Substring — 40 Hard Solve
20 Sliding Window Maximum — 40 Hard Solve
21 Valid Parentheses — 20 Easy Solve
22 Min Stack — 30 Medium Solve
23 Evaluate Reverse Polish Notation — 30 Medium Solve
24 Generate Parentheses — 30 Medium Solve
25 Daily Temperatures — 30 Medium Solve
26 Car Fleet — 30 Medium Solve
27 Largest Rectangle in Histogram — 40 Hard Solve
28 Binary Search — 20 Easy Solve
29 Search a 2D Matrix — 30 Medium Solve
30 Koko Eating Bananas — 30 Medium Solve
31 Find Minimum in Rotated Sorted Array — 30 Medium Solve
32 Search in Rotated Sorted Array — 30 Medium Solve
33 Time Based Key-Value Store — 30 Medium Solve
34 Median of Two Sorted Arrays — 40 Hard Solve
35 Reverse Linked List — 20 Easy Solve
36 Merge Two Sorted Lists — 20 Easy Solve
37 Reorder List — 30 Medium Solve
38 Remove Nth Node From End of List — 30 Medium Solve
39 Copy List with Random Pointer — 30 Medium Solve
40 Add Two Numbers — 30 Medium Solve
41 Linked List Cycle — 20 Easy Solve
42 Find the Duplicate Number — 30 Medium Solve
43 LRU Cache — 30 Medium Solve
44 Merge k Sorted Lists — 40 Hard Solve
45 Reverse Nodes in k-Group — 40 Hard Solve
46 Invert Binary Tree — 20 Easy Solve
47 Maximum Depth of Binary Tree — 20 Easy Solve
48 Diameter of Binary Tree — 20 Easy Solve
49 Balanced Binary Tree — 20 Easy Solve
50 Same Tree — 20 Easy Solve
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