DSA Atlas
beta
Source data
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Twitter
Problems collected from leetcode for Twitter.
16% Easy
61% Medium
24% Hard
Your progress
0/51
All
Easy
Medium
Hard
All topics
Status
Problem
Difficulty
Frequency
Acceptance
Topics
Todo
10.
Regular Expression Matching
Hard
Top 6 Months
31.0%
Todo
12.
Integer to Roman
Medium
Top 6 Months
71.0%
Todo
20.
Valid Parentheses
Easy
Top 6 Months
44.2%
Todo
23.
Merge k Sorted Lists
Hard
Top 6 Months
59.6%
Todo
42.
Trapping Rain Water
Hard
Top 6 Months
67.4%
Todo
43.
Multiply Strings
Medium
Top 6 Months
44.2%
Todo
44.
Wildcard Matching
Hard
Top 6 Months
32.0%
Todo
56.
Merge Intervals
Medium
Top 6 Months
51.8%
Todo
60.
Permutation Sequence
Hard
Top 6 Months
53.1%
Todo
118.
Pascal's Triangle
Easy
Top 6 Months
78.9%
Todo
140.
Word Break II
Hard
Top 6 Months
55.6%
Todo
146.
LRU Cache
Medium
Top 6 Months
47.4%
Todo
149.
Max Points on a Line
Hard
Top 6 Months
30.7%
Todo
161.
One Edit Distance
Medium
Top 6 Months
34.6%
Todo
202.
Happy Number
Easy
Top 6 Months
59.7%
Todo
206.
Reverse Linked List
Easy
Top 6 Months
80.6%
Todo
208.
Implement Trie (Prefix Tree)
Medium
Top 6 Months
69.5%
Todo
218.
The Skyline Problem
Hard
Top 6 Months
45.4%
Todo
235.
Lowest Common Ancestor of a Binary Search Tree
Medium
Top 6 Months
70.6%
Todo
251.
Flatten 2D Vector
Medium
Top 6 Months
50.5%
Todo
269.
Alien Dictionary
Hard
Top 6 Months
37.2%
Todo
296.
Best Meeting Point
Hard
Top 6 Months
61.4%
Todo
323.
Number of Connected Components in an Undirected Graph
Medium
Top 6 Months
65.0%
Todo
341.
Flatten Nested List Iterator
Medium
Top 6 Months
65.7%
Todo
355.
Design Twitter
Medium
Top 6 Months
44.7%
Todo
378.
Kth Smallest Element in a Sorted Matrix
Medium
Top 6 Months
64.6%
Todo
380.
Insert Delete GetRandom O(1)
Medium
Top 6 Months
55.4%
Todo
407.
Trapping Rain Water II
Hard
Top 6 Months
64.1%
Todo
433.
Minimum Genetic Mutation
Medium
Top 6 Months
56.6%
Todo
468.
Validate IP Address
Medium
Top 6 Months
28.3%
Todo
580.
Count Student Number in Departments
Medium
Top 6 Months
60.0%
Todo
585.
Investments in 2016
Medium
Top 6 Months
51.1%
Todo
586.
Customer Placing the Largest Number of Orders
Easy
Top 6 Months
64.4%
Todo
608.
Tree Node
Medium
Top 6 Months
75.7%
Todo
764.
Largest Plus Sign
Medium
Top 6 Months
49.2%
Todo
831.
Masking Personal Information
Medium
Top 6 Months
55.2%
Todo
868.
Binary Gap
Easy
Top 6 Months
74.3%
Todo
1167.
Minimum Cost to Connect Sticks
Medium
Top 6 Months
71.9%
Todo
1206.
Design Skiplist
Hard
Top 6 Months
59.7%
Todo
1347.
Minimum Number of Steps to Make Two Strings Anagram
Medium
Top 6 Months
82.5%
Todo
1348.
Tweet Counts Per Frequency
Medium
Top 6 Months
46.1%
Todo
1459.
Rectangles Area
Medium
Top 6 Months
68.8%
Todo
1683.
Invalid Tweets
Easy
Top 6 Months
85.1%
Todo
1785.
Minimum Elements to Add to Form a Given Sum
Medium
Top 6 Months
45.2%
Todo
1797.
Design Authentication Manager
Medium
Top 6 Months
58.6%
Todo
1817.
Finding the Users Active Minutes
Medium
Top 6 Months
80.8%
Todo
1882.
Process Tasks Using Servers
Medium
Top 6 Months
41.9%
Todo
1905.
Count Sub Islands
Medium
Top 6 Months
73.0%
Todo
1910.
Remove All Occurrences of a Substring
Medium
Top 6 Months
78.5%
Todo
2073.
Time Needed to Buy Tickets
Easy
Top 6 Months
72.6%
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