Qualcomm Coding Interview Questions

Qualcomm coding interviews focus on evaluating a candidate's knowledge of data structures, algorithms, and problem-solving skills through coding challenges.

• Questions are categorized into Easy, Medium, and Hard difficulty levels to assess candidates at different experience levels.
• The interview emphasizes writing optimized, clean, and efficient code while demonstrating strong analytical thinking.

Easy Level

1. Two Sum
2. Reverse Bits
3. Number of 1 Bits (Count Set Bits)
4. Single Number
5. Missing Number
6. Binary Search
7. Search Insert Position
8. Merge Two Sorted Arrays
9. Move Zeroes
10. Valid Parentheses
11. Reverse Linked List
12. Merge Two Sorted Linked Lists
13. Maximum Depth of Binary Tree
14. Symmetric Binary Tree
15. First Unique Character in a String

Medium Level

1. Longest Substring Without Repeating Characters
2. Product of Array Except Self
3. Search in Rotated Sorted Array
4. Rotate Image
5. Kth Largest Element in an Array
6. Lowest Common Ancestor of a Binary Tree
7. Construct Binary Tree from Preorder and Inorder Traversal
8. Detect Cycle in a Directed Graph
9. Course Schedule
10. Number of Islands
11. Clone Graph
12. Coin Change
13. Longest Increasing Subsequence
14. House Robber
15. Implement LRU Cache

Hard Level

1. Median of Two Sorted Arrays
2. Trapping Rain Water
3. Merge k Sorted Lists
4. Word Ladder
5. Word Boggle
6. N-Queens
7. Sudoku Solver
8. Regular Expression Matching
9. Edit Distance
10. Serialize and Deserialize Binary Tree
11. Maximum Rectangle in Binary Matrix
12. Minimum Window Substring
13. Sliding Window Maximum
14. Maximum XOR of Two Numbers in an Array
15. Alien Dictionary