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Practice Arena

Coding Challenges

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

90
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No. 1
Two Sum Easy
Topics:
Arrays Hash Table
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 2
Add Two Numbers Medium
Topics:
Linked List Math
Companies:
Amazon Bloomberg
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. 4
Median of Two Sorted Arrays Hard
Topics:
Arrays Binary Search
Companies:
Amazon Apple
Acceptance: 0%
Solve Challenge
No. 5
Longest Palindromic Substring Medium
Topics:
Dynamic Programming Strings
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 7
Reverse Integer Medium
Topics:
Math
Companies:
Apple Bloomberg
Acceptance: 0%
Solve Challenge
No. 9
Palindrome Number Easy
Topics:
Math
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 11
Container With Most Water Medium
Topics:
Arrays Greedy Two Pointers
Companies:
Amazon Google
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. 15
3Sum Medium
Topics:
Arrays Sorting Two Pointers
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 17
Letter Combinations of a Phone Number Medium
Topics:
Backtracking Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 19
Remove Nth Node From End of List Medium
Topics:
Linked List Two Pointers
Companies:
Amazon Meta
Acceptance: 0%
Solve Challenge
No. 20
Valid Parentheses Easy
Topics:
Stack Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 21
Merge Two Sorted Lists Easy
Topics:
Linked List Recursion
Companies:
Amazon Apple
Acceptance: 0%
Solve Challenge
No. 22
Generate Parentheses Medium
Topics:
Backtracking Dynamic Programming Strings
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 23
Merge k Sorted Lists Hard
Topics:
Heap Linked List Sorting
Companies:
Amazon Google
Acceptance: 0%
Solve Challenge
No. 26
Remove Duplicates from Sorted Array Easy
Topics:
Arrays Two Pointers
Companies:
Adobe Amazon
Acceptance: 0%
Solve Challenge
No. 33
Search in Rotated Sorted Array Medium
Topics:
Arrays Binary Search
Companies:
Google Meta
Acceptance: 0%
Solve Challenge
No. 35
Search Insert Position Easy
Topics:
Arrays Binary Search
Companies:
Amazon Apple
Acceptance: 0%
Solve Challenge
Showing 1-20 of 90
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