DSA Atlas
beta
Source data
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Amazon
Problems collected from leetcode for Amazon.
27% Easy
55% Medium
18% Hard
Your progress
0/1957
All
Easy
Medium
Hard
All topics
Status
Problem
Difficulty
Frequency
Acceptance
Topics
Todo
1.
Two Sum
Easy
Top 30 Days
57.5%
Todo
2.
Add Two Numbers
Medium
Top 30 Days
48.5%
Todo
3.
Longest Substring Without Repeating Characters
Medium
Top 30 Days
39.1%
Todo
4.
Median of Two Sorted Arrays
Hard
Top 30 Days
46.6%
Todo
5.
Longest Palindromic Substring
Medium
Top 30 Days
37.8%
Todo
6.
Zigzag Conversion
Medium
Top 3 Months
54.2%
Todo
7.
Reverse Integer
Medium
Top 30 Days
31.9%
Todo
8.
String to Integer (atoi)
Medium
Top 3 Months
21.0%
Todo
9.
Palindrome Number
Easy
Top 30 Days
60.6%
Todo
10.
Regular Expression Matching
Hard
Top 3 Months
31.0%
Todo
11.
Container With Most Water
Medium
Top 30 Days
60.0%
Todo
12.
Integer to Roman
Medium
Top 3 Months
71.0%
Todo
13.
Roman to Integer
Easy
Top 3 Months
66.6%
Todo
14.
Longest Common Prefix
Easy
Top 3 Months
47.6%
Todo
15.
3Sum
Medium
Top 30 Days
39.1%
Todo
16.
3Sum Closest
Medium
Top 3 Months
48.6%
Todo
17.
Letter Combinations of a Phone Number
Medium
Top 3 Months
66.1%
Todo
18.
4Sum
Medium
Top 3 Months
40.6%
Todo
19.
Remove Nth Node From End of List
Medium
Top 30 Days
51.6%
Todo
20.
Valid Parentheses
Easy
Top 30 Days
44.2%
Todo
21.
Merge Two Sorted Lists
Easy
Top 3 Months
68.3%
Todo
22.
Generate Parentheses
Medium
Top 30 Days
78.7%
Todo
23.
Merge k Sorted Lists
Hard
Top 30 Days
59.6%
Todo
24.
Swap Nodes in Pairs
Medium
Top 3 Months
69.5%
Todo
25.
Reverse Nodes in k-Group
Hard
Top 3 Months
66.1%
Todo
26.
Remove Duplicates from Sorted Array
Easy
Top 30 Days
62.8%
Todo
27.
Remove Element
Easy
Top 3 Months
61.8%
Todo
28.
Find the Index of the First Occurrence in a String
Easy
Top 3 Months
46.7%
Todo
29.
Divide Two Integers
Medium
Top 6 Months
19.8%
Todo
30.
Substring with Concatenation of All Words
Hard
Top 3 Months
34.4%
Todo
31.
Next Permutation
Medium
Top 3 Months
45.3%
Todo
32.
Longest Valid Parentheses
Hard
Top 3 Months
38.8%
Todo
33.
Search in Rotated Sorted Array
Medium
Top 30 Days
44.9%
Todo
34.
Find First and Last Position of Element in Sorted Array
Medium
Top 30 Days
48.9%
Todo
35.
Search Insert Position
Easy
Top 30 Days
51.3%
Todo
36.
Valid Sudoku
Medium
Top 3 Months
64.5%
Todo
37.
Sudoku Solver
Hard
Top 3 Months
65.5%
Todo
38.
Count and Say
Medium
Top 3 Months
62.9%
Todo
39.
Combination Sum
Medium
Top 3 Months
76.5%
Todo
40.
Combination Sum II
Medium
Top 6 Months
59.5%
Todo
41.
First Missing Positive
Hard
Top 3 Months
42.9%
Todo
42.
Trapping Rain Water
Hard
Top 30 Days
67.4%
Todo
43.
Multiply Strings
Medium
Top 3 Months
44.2%
Todo
44.
Wildcard Matching
Hard
Top 3 Months
32.0%
Todo
45.
Jump Game II
Medium
Top 3 Months
42.9%
Todo
46.
Permutations
Medium
Top 3 Months
81.9%
Todo
47.
Permutations II
Medium
Top 6 Months
63.5%
Todo
48.
Rotate Image
Medium
Top 30 Days
80.1%
Todo
49.
Group Anagrams
Medium
Top 30 Days
72.6%
Todo
50.
Pow(x, n)
Medium
Top 3 Months
38.7%
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