DSA Atlas
beta
Source data
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Apple
Problems collected from leetcode for Apple.
25% Easy
60% Medium
15% Hard
Your progress
0/303
All
Easy
Medium
Hard
All topics
Status
Problem
Difficulty
Frequency
Acceptance
Topics
Todo
1.
Two Sum
Easy
Top 3 Months
57.5%
Todo
2.
Add Two Numbers
Medium
Top 6 Months
48.5%
Todo
3.
Longest Substring Without Repeating Characters
Medium
Top 6 Months
39.1%
Todo
4.
Median of Two Sorted Arrays
Hard
Top 6 Months
46.6%
Todo
5.
Longest Palindromic Substring
Medium
Top 6 Months
37.8%
Todo
6.
Zigzag Conversion
Medium
Top All-time
54.2%
Todo
7.
Reverse Integer
Medium
Top 3 Months
31.9%
Todo
8.
String to Integer (atoi)
Medium
Top 6 Months
21.0%
Todo
10.
Regular Expression Matching
Hard
Top 6 Months
31.0%
Todo
11.
Container With Most Water
Medium
Top 6 Months
60.0%
Todo
13.
Roman to Integer
Easy
Top 6 Months
66.6%
Todo
14.
Longest Common Prefix
Easy
Top 30 Days
47.6%
Todo
15.
3Sum
Medium
Top 3 Months
39.1%
Todo
17.
Letter Combinations of a Phone Number
Medium
Top 3 Months
66.1%
Todo
18.
4Sum
Medium
Top 6 Months
40.6%
Todo
19.
Remove Nth Node From End of List
Medium
Top 6 Months
51.6%
Todo
20.
Valid Parentheses
Easy
Top 6 Months
44.2%
Todo
21.
Merge Two Sorted Lists
Easy
Top 6 Months
68.3%
Todo
22.
Generate Parentheses
Medium
Top 6 Months
78.7%
Todo
23.
Merge k Sorted Lists
Hard
Top 3 Months
59.6%
Todo
25.
Reverse Nodes in k-Group
Hard
Top 6 Months
66.1%
Todo
26.
Remove Duplicates from Sorted Array
Easy
Top 6 Months
62.8%
Todo
27.
Remove Element
Easy
Top 6 Months
61.8%
Todo
28.
Find the Index of the First Occurrence in a String
Easy
Top 6 Months
46.7%
Todo
30.
Substring with Concatenation of All Words
Hard
Top All-time
34.4%
Todo
33.
Search in Rotated Sorted Array
Medium
Top 6 Months
44.9%
Todo
34.
Find First and Last Position of Element in Sorted Array
Medium
Top 3 Months
48.9%
Todo
36.
Valid Sudoku
Medium
Top 6 Months
64.5%
Todo
37.
Sudoku Solver
Hard
Top 6 Months
65.5%
Todo
39.
Combination Sum
Medium
Top 6 Months
76.5%
Todo
41.
First Missing Positive
Hard
Top 6 Months
42.9%
Todo
42.
Trapping Rain Water
Hard
Top 6 Months
67.4%
Todo
45.
Jump Game II
Medium
Top 6 Months
42.9%
Todo
46.
Permutations
Medium
Top 6 Months
81.9%
Todo
47.
Permutations II
Medium
Top 6 Months
63.5%
Todo
48.
Rotate Image
Medium
Top 3 Months
80.1%
Todo
49.
Group Anagrams
Medium
Top 30 Days
72.6%
Todo
53.
Maximum Subarray
Medium
Top 6 Months
53.3%
Todo
54.
Spiral Matrix
Medium
Top 3 Months
56.8%
Todo
55.
Jump Game
Medium
Top 6 Months
40.9%
Todo
56.
Merge Intervals
Medium
Top 30 Days
51.8%
Todo
57.
Insert Interval
Medium
Top 6 Months
45.2%
Todo
67.
Add Binary
Easy
Top 6 Months
58.1%
Todo
68.
Text Justification
Hard
Top 6 Months
51.2%
Todo
69.
Sqrt(x)
Easy
Top 6 Months
41.8%
Todo
70.
Climbing Stairs
Easy
Top 6 Months
54.1%
Todo
71.
Simplify Path
Medium
Top 6 Months
50.6%
Todo
72.
Edit Distance
Medium
Top 3 Months
60.6%
Todo
73.
Set Matrix Zeroes
Medium
Top 6 Months
62.9%
Todo
74.
Search a 2D Matrix
Medium
Top 6 Months
53.9%
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