DSA Atlas
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Citadel
Problems collected from leetcode for Citadel.
7% Easy
62% Medium
31% Hard
Your progress
0/89
All
Easy
Medium
Hard
All topics
Status
Problem
Difficulty
Frequency
Acceptance
Topics
Todo
1.
Two Sum
Easy
Top All-time
57.5%
Todo
5.
Longest Palindromic Substring
Medium
Top 6 Months
37.8%
Todo
17.
Letter Combinations of a Phone Number
Medium
Top 6 Months
66.1%
Todo
23.
Merge k Sorted Lists
Hard
Top 6 Months
59.6%
Todo
31.
Next Permutation
Medium
Top 6 Months
45.3%
Todo
34.
Find First and Last Position of Element in Sorted Array
Medium
Top 6 Months
48.9%
Todo
37.
Sudoku Solver
Hard
Top 6 Months
65.5%
Todo
39.
Combination Sum
Medium
Top 6 Months
76.5%
Todo
46.
Permutations
Medium
Top 6 Months
81.9%
Todo
49.
Group Anagrams
Medium
Top 6 Months
72.6%
Todo
50.
Pow(x, n)
Medium
Top 6 Months
38.7%
Todo
53.
Maximum Subarray
Medium
Top All-time
53.3%
Todo
56.
Merge Intervals
Medium
Top 6 Months
51.8%
Todo
69.
Sqrt(x)
Easy
Top 6 Months
41.8%
Todo
70.
Climbing Stairs
Easy
Top 6 Months
54.1%
Todo
79.
Word Search
Medium
Top 6 Months
47.4%
Todo
98.
Validate Binary Search Tree
Medium
Top 6 Months
35.8%
Todo
103.
Binary Tree Zigzag Level Order Traversal
Medium
Top 6 Months
63.7%
Todo
121.
Best Time to Buy and Sell Stock
Easy
Top 6 Months
56.8%
Todo
123.
Best Time to Buy and Sell Stock III
Hard
Top 6 Months
53.7%
Todo
124.
Binary Tree Maximum Path Sum
Hard
Top 6 Months
42.3%
Todo
126.
Word Ladder II
Hard
Top 6 Months
27.7%
Todo
127.
Word Ladder
Hard
Top 3 Months
45.6%
Todo
146.
LRU Cache
Medium
Top 6 Months
47.4%
Todo
149.
Max Points on a Line
Hard
Top 6 Months
30.7%
Todo
150.
Evaluate Reverse Polish Notation
Medium
Top 6 Months
57.8%
Todo
151.
Reverse Words in a String
Medium
Top 6 Months
56.4%
Todo
155.
Min Stack
Medium
Top 6 Months
58.2%
Todo
188.
Best Time to Buy and Sell Stock IV
Hard
Top All-time
50.1%
Todo
200.
Number of Islands
Medium
Top 6 Months
64.4%
Todo
204.
Count Primes
Medium
Top 6 Months
36.1%
Todo
207.
Course Schedule
Medium
Top 6 Months
51.4%
Todo
208.
Implement Trie (Prefix Tree)
Medium
Top 6 Months
69.5%
Todo
210.
Course Schedule II
Medium
Top 6 Months
55.5%
Todo
221.
Maximal Square
Medium
Top 6 Months
50.3%
Todo
239.
Sliding Window Maximum
Hard
Top 6 Months
48.8%
Todo
253.
Meeting Rooms II
Medium
Top 6 Months
52.7%
Todo
256.
Paint House
Medium
Top 6 Months
64.4%
Todo
279.
Perfect Squares
Medium
Top 6 Months
56.5%
Todo
287.
Find the Duplicate Number
Medium
Top 6 Months
64.3%
Todo
295.
Find Median from Data Stream
Hard
Top 3 Months
54.5%
Todo
297.
Serialize and Deserialize Binary Tree
Hard
Top 6 Months
60.8%
Todo
300.
Longest Increasing Subsequence
Medium
Top 6 Months
59.4%
Todo
332.
Reconstruct Itinerary
Hard
Top 6 Months
44.6%
Todo
343.
Integer Break
Medium
Top 6 Months
62.3%
Todo
346.
Moving Average from Data Stream
Easy
Top 6 Months
80.2%
Todo
348.
Design Tic-Tac-Toe
Medium
Top 6 Months
58.7%
Todo
380.
Insert Delete GetRandom O(1)
Medium
Top 6 Months
55.4%
Todo
399.
Evaluate Division
Medium
Top 6 Months
64.2%
Todo
412.
Fizz Buzz
Easy
Top 6 Months
75.5%
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