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Problem Statistics
Breakdown of 210 problems.

Difficulty Distribution

(46)
(126)
(38)

Recency Distribution

(39)
(44)
(127)

Most Common Tags (Top 7)

Array (105)
String (58)
Hash Table (42)
Dynamic Programming (37)
Two Pointers (28)
Depth-First Search (28)
Math (27)
Coding Interview Problems for Amazon
210
132 Pattern
Last 30 days
Medium

Topics

Array
Binary Search
Stack
Monotonic Stack
+1 more
Trending
Recent
Mock
3Sum
3-6 months ago
Medium

Topics

Array
Two Pointers
Sorting
Trending
Recent
Mock
3Sum Closest
3-6 months ago
Medium

Topics

Array
Two Pointers
Sorting
Trending
Recent
Mock
4Sum
3-6 months ago
Medium

Topics

Array
Two Pointers
Sorting
Trending
Recent
Mock
Add Binary
3-6 months ago
Easy

Topics

Math
String
Bit Manipulation
Simulation
Trending
Recent
Mock
Add Two Numbers
3-6 months ago
Medium

Topics

Linked List
Math
Recursion
Trending
Recent
Mock
All Nodes Distance K in Binary Tree
Last 30 days
Medium

Topics

Hash Table
Tree
Depth-First Search
Breadth-First Search
+1 more
Trending
Recent
Mock
Analyze User Website Visit Pattern
Last 30 days
Medium

Topics

Array
Hash Table
Sorting
Trending
Recent
Mock
Asteroid Collision
1-3 months ago
Medium

Topics

Array
Stack
Simulation
Trending
Recent
Mock
Basic Calculator
1-3 months ago
Hard

Topics

Math
String
Stack
Recursion
Trending
Recent
Mock
Basic Calculator II
1-3 months ago
Medium

Topics

Math
String
Stack
Trending
Recent
Mock
Best Time to Buy and Sell Stock
3-6 months ago
Easy

Topics

Array
Dynamic Programming
Trending
Recent
Mock
Best Time to Buy and Sell Stock II
3-6 months ago
Medium

Topics

Array
Dynamic Programming
Greedy
Trending
Recent
Mock
Binary Tree Inorder Traversal
3-6 months ago
Easy

Topics

Stack
Tree
Depth-First Search
Binary Tree
Trending
Recent
Mock
Binary Tree Level Order Traversal
3-6 months ago
Medium

Topics

Tree
Breadth-First Search
Binary Tree
Trending
Recent
Mock