Practice Arena

Coding Challenges

Master your programming skills with our curated collection of technical interview problems.

45

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No. 124

Binary Tree Maximum Path Sum Hard

Topics:

Dynamic Programming Recursion Trees

Companies:

Amazon Google

Acceptance: 0%

Solve Challenge

No. 125

Valid Palindrome Easy

Topics:

Strings Two Pointers

Companies:

Amazon Meta

Acceptance: 0%

Solve Challenge

No. 128

Longest Consecutive Sequence Medium

Topics:

Arrays Hash Table

Companies:

Amazon Google

Acceptance: 0%

Solve Challenge

No. 146

LRU Cache Medium

Topics:

Hash Table Linked List

Companies:

Amazon Google

Acceptance: 0%

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No. 148

Sort List Medium

Topics:

Linked List Sorting

Companies:

Amazon Google

Acceptance: 0%

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No. 160

Intersection of Two Linked Lists Easy

Topics:

Linked List Two Pointers

Companies:

Amazon Bloomberg

Acceptance: 0%

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No. 199

Binary Tree Right Side View Medium

Topics:

Graphs Trees

Companies:

Amazon Bloomberg

Acceptance: 0%

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No. 200

Number of Islands Medium

Topics:

Arrays Graphs Matrix

Companies:

Amazon Google

Acceptance: 0%

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No. 207

Course Schedule Medium

Topics:

Graphs

Companies:

Amazon Google

Acceptance: 0%

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No. 215

Kth Largest Element in an Array Medium

Topics:

Arrays Heap Sorting

Companies:

Amazon Google

Acceptance: 0%

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No. 226

Invert Binary Tree Easy

Topics:

Recursion Trees

Companies:

Amazon Google

Acceptance: 0%

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No. 230

Kth Smallest Element in a BST Medium

Topics:

Binary Search Trees

Companies:

Amazon Google

Acceptance: 0%

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No. 234

Palindrome Linked List Easy

Topics:

Linked List Recursion Two Pointers

Companies:

Amazon Google

Acceptance: 0%

Solve Challenge

No. 238

Product of Array Except Self Medium

Topics:

Arrays

Companies:

Amazon Apple

Acceptance: 0%

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No. 283

Move Zeroes Easy

Topics:

Arrays Two Pointers

Companies:

Amazon Apple

Acceptance: 0%

Solve Challenge

No. 295

Find Median from Data Stream Hard

Topics:

Heap Sorting

Companies:

Amazon Google

Acceptance: 0%

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No. 297

Serialize and Deserialize Binary Tree Hard

Topics:

Strings Trees

Companies:

Amazon Google

Acceptance: 0%

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No. 347

Top K Frequent Elements Medium

Topics:

Arrays Hash Table Heap

Companies:

Amazon Google

Acceptance: 0%

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No. 371

Sum of Two Integers Medium

Topics:

Bit Manipulation Math

Companies:

Amazon Google

Acceptance: 0%

Solve Challenge

No. 416

Partition Equal Subset Sum Medium

Topics:

Arrays Dynamic Programming

Companies:

Amazon Google

Acceptance: 0%

Solve Challenge

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