HCL Coding Interview Questions
We track 15 coding questions asked at HCL, tagged with the algorithms and concepts they test. The most common: String, Two Pointers, Array, Dynamic Programming, Hash Table.
Browse all 15 HCL questions →Concept mix
Each question's weight is split evenly across its concepts, so the shares sum to 100%.
- String20.0%
- Two Pointers18.9%
- Array13.9%
- Database13.3%
- Dynamic Programming7.8%
- Hash Table6.7%
- Sorting5.6%
- Sliding Window3.9%
- Stack3.3%
- Binary Search2.8%
- Other (3)3.9%
How many questions involve each concept
Share of all 15 tracked HCL questions that touch each concept. Questions usually involve several, so these overlap.
- String46.7%
- Two Pointers46.7%
- Array40.0%
- Dynamic Programming20.0%
- Hash Table20.0%
- Sorting20.0%
- Binary Search13.3%
- Database13.3%
- Sliding Window13.3%
- Bit Manipulation6.7%
- Math6.7%
- Prefix Sum6.7%
Where HCL differs from the average company
Concept weight at HCL relative to the average across all companies we track. Green means HCL leans on it harder than most.
- Two Pointers5.2×
- Database4.9×
- Sliding Window2.6×
- String2.1×
- Array0.72×
HCL specialties
Concepts that show up at HCL but are rarely asked elsewhere. They are easy to get blindsided by.
Difficulty mix
Level split of the 15 tracked HCL questions.
- Junior47% (7)
- Mid/Senior47% (7)
- Staff7% (1)
Every concept in HCL interviews
| Concept | Questions | % of questions | Share of mix |
|---|---|---|---|
| String | 7 | 46.7% | 20.0% |
| Two Pointers | 7 | 46.7% | 18.9% |
| Array | 6 | 40.0% | 13.9% |
| Dynamic Programming | 3 | 20.0% | 7.8% |
| Hash Table | 3 | 20.0% | 6.7% |
| Sorting | 3 | 20.0% | 5.6% |
| Binary Search | 2 | 13.3% | 2.8% |
| Database | 2 | 13.3% | 13.3% |
| Sliding Window | 2 | 13.3% | 3.9% |
| Bit Manipulation | 1 | 6.7% | 1.1% |
| Math | 1 | 6.7% | 1.1% |
| Prefix Sum | 1 | 6.7% | 1.7% |
| Stack | 1 | 6.7% | 3.3% |
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