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Elevo
Practice Arena

Coding Challenges

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

16
Total Problems
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No. 3
Longest Substring Without Repeating Characters Medium
Topics:
Hash Table Sliding Window Strings
Companies:
Amazon Bloomberg
Acceptance: 0%
Solve Challenge
No. 5
Longest Palindromic Substring Medium
Topics:
Dynamic Programming Strings
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 13
Roman to Integer Easy
Topics:
Hash Table Math Strings
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 14
Longest Common Prefix Easy
Topics:
Strings
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 17
Letter Combinations of a Phone Number Medium
Topics:
Backtracking Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 20
Valid Parentheses Easy
Topics:
Stack Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 22
Generate Parentheses Medium
Topics:
Backtracking Dynamic Programming Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 49
Group Anagrams Medium
Topics:
Arrays Hash Table Sorting
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 76
Minimum Window Substring Hard
Topics:
Hash Table Sliding Window Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 125
Valid Palindrome Easy
Topics:
Strings Two Pointers
Companies:
Amazon Meta
Acceptance: 0%
Solve Challenge
No. 208
Implement Trie (Prefix Tree) Medium
Topics:
Hash Table Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 242
Valid Anagram Easy
Topics:
Hash Table Sorting Strings
Companies:
Amazon Bloomberg
Acceptance: 0%
Solve Challenge
No. 297
Serialize and Deserialize Binary Tree Hard
Topics:
Strings Trees
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 394
Decode String Medium
Topics:
Recursion Stack Strings
Companies:
Amazon Bloomberg
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. 647
Palindromic Substrings Medium
Topics:
Dynamic Programming Strings
Companies:
Amazon Meta
Acceptance: 0%
Solve Challenge
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