HCLLeetCode Questions
VerifiedCompany-wise coding interview questions asked by HCL, ranked by real frequency across 30-day, 3-month, and 6-month recency windows.
# | Problem | Difficulty | Frequency↓ | Acceptance | |
|---|---|---|---|---|---|
| #1 | Two Sum3 sources | Easy | 100% | 57.8% | |
| #20 | Valid Parentheses3 sources | Easy | 88% | 44.5% | |
| #3 | Medium | 78% | 39.4% | ||
| #88 | Merge Sorted Array3 sources | Easy | 78% | 55.2% | |
| #125 | Valid Palindrome3 sources | Easy | 78% | 53.7% | |
| #121 | Best Time to Buy and Sell Stock3 sources | Easy | 75% | 57.1% | |
| #344 | Reverse String3 sources | Easy | 63% | 81.0% | |
| #176 | Medium | 63% | 47.5% | ||
| #185 | Hard | 63% | 61.0% | ||
| #5 | Longest Palindromic Substring3 sources | Medium | 63% | 38.2% | |
| #647 | Palindromic Substrings3 sources | Medium | 63% | 73.0% | |
| #151 | Reverse Words in a String3 sources | Medium | 63% | 57.0% | |
| #53 | Maximum Subarray3 sources | Medium | 63% | 53.5% | |
| #268 | Missing Number3 sources | Easy | 63% | 72.3% | |
| #209 | Minimum Size Subarray Sum3 sources | Medium | 63% | 52.2% | |
| #367 | Valid Perfect Square3 sources | Easy | 63% | 45.1% | |
| #42 | Trapping Rain Water2 sources | Hard | 61% | 0.7% | |
| #9 | Palindrome Number2 sources | Easy | 61% | 0.6% |
HCL Technical Interview Overview & Company-Wise Questions
Software engineering and technical interviews at HCL emphasize real-world problem solving, algorithmic efficiency, and scalable data structure design. The curated dataset above contains 18 verified LeetCode problems, categorized by frequency and filtered across recent interview seasons.
Frequently Asked Questions
What are the top LeetCode questions for HCL?
Leading questions include Two Sum, Valid Parentheses, Longest Substring Without Repeating Characters. Reviewing questions with higher recency (within the last 30 to 90 days) yields the highest return on preparation time.
Where can I practice company-wise LeetCode questions for HCL?
You can practice all 18 HCL LeetCode questions right here on LeetMap Pro. Filter by 30-day, 3-month, and 6-month recency, track your progress with local checkpoints, and practice curated SQL problems completely free.
How should I prepare for HCL coding rounds?
Begin by reviewing Medium-difficulty problems (7 tracked), which constitute the majority of technical rounds. Complement coding practice with foundational DSA patterns like Sliding Window, Two Pointers, and Graph Traversal.