AT&T LeetCode Interview Questions
Practice 23 real coding problems frequently asked in AT&T technical interviews. Master these questions to ace your next AT&T software engineering interview.
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AT&T Interview Problems
| Problem | DifficultyDiff | Action |
|---|---|---|
Valid Palindrome 100% | EasyE | Solve→ |
Rotting Oranges 92% | MediumM | Solve→ |
Remove All Adjacent Duplicates In String 84% | EasyE | Solve→ |
LRU Cache 80% | MediumM | Solve→ |
Word Ladder 77% | HardH | Solve→ |
Number of Islands 77% | MediumM | Solve→ |
Take Gifts From the Richest Pile 70% | EasyE | Solve→ |
Remove Letter To Equalize Frequency 62% | EasyE | Solve→ |
Find Longest Self-Contained Substring 59% | HardH | Solve→ |
Combination Sum II 58% | MediumM | Solve→ |
Maximize Amount After Two Days of Conversions 58% | MediumM | Solve→ |
Palindrome Linked List 57% | EasyE | Solve→ |
3Sum 54% | MediumM | Solve→ |
K Inverse Pairs Array 45% | HardH | Solve→ |
Insert Delete GetRandom O(1) 38% | MediumM | Solve→ |
N-Queens 37% | HardH | Solve→ |
Integer to English Words 32% | HardH | Solve→ |
Check if One String Swap Can Make Strings Equal 32% | EasyE | Solve→ |
Minimum Time to Visit a Cell In a Grid 28% | HardH | Solve→ |
Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit 26% | MediumM | Solve→ |
Binary Tree Right Side View 23% | MediumM | Solve→ |
Final Array State After K Multiplication Operations I 21% | EasyE | Solve→ |
Minimum Limit of Balls in a Bag 20% | MediumM | Solve→ |
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Frequently Asked Questions
What LeetCode problems does AT&T ask in interviews?
AT&T commonly asks 23 coding problems in technical interviews, including Valid Palindrome, Rotting Oranges, Remove All Adjacent Duplicates In String. The difficulty breakdown is 7 Easy, 10 Medium, and 6 Hard problems.
How should I prepare for a AT&T coding interview?
Focus on the most frequently asked problems first, especially those with high frequency scores. AT&T interviews typically emphasize Array and String. Practice explaining your thought process while coding.
What is the difficulty level of AT&T coding interviews?
Based on our data, AT&T interviews include 7 Easy (30%), 10 Medium (43%), and 6 Hard (26%) problems.
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