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Elevo
Practice Arena

Coding Challenges

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

16
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No. 1
Two Sum Easy
Topics:
Arrays Hash Table
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 3
Longest Substring Without Repeating Characters Medium
Topics:
Hash Table Sliding Window Strings
Companies:
Amazon Bloomberg
Acceptance: 0%
Solve Challenge
No. 13
Roman to Integer Easy
Topics:
Hash Table Math Strings
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 49
Group Anagrams Medium
Topics:
Arrays Hash Table Sorting
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 73
Set Matrix Zeroes Medium
Topics:
Arrays Hash Table Matrix
Companies:
Amazon Meta
Acceptance: 0%
Solve Challenge
No. 76
Minimum Window Substring Hard
Topics:
Hash Table Sliding Window Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 105
Construct Binary Tree from Preorder and Inorder Traversal Medium
Topics:
Hash Table Recursion Trees
Companies:
Amazon Google
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%
Solve Challenge
No. 169
Majority Element Easy
Topics:
Arrays Hash Table Sorting
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 208
Implement Trie (Prefix Tree) Medium
Topics:
Hash Table Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 217
Contains Duplicate Easy
Topics:
Arrays Hash Table Sorting
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 242
Valid Anagram Easy
Topics:
Hash Table Sorting Strings
Companies:
Amazon Bloomberg
Acceptance: 0%
Solve Challenge
No. 347
Top K Frequent Elements Medium
Topics:
Arrays Hash Table Heap
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 438
Find All Anagrams in a String Medium
Topics:
Hash Table Sliding Window Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 560
Subarray Sum Equals K Medium
Topics:
Arrays Hash Table
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
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