Based on 4 reported problems, Cleartrip interviews are slightly harder than average - 25% Hard vs 18% across all companies. The majority (75%) of questions are Medium difficulty, which is typical for companies that want to see solid fundamentals without excessive trick questions.
Compared to the industry average, Cleartrip puts unusual emphasis on dynamic-programming (50% of problems, 2.5x the industry average), hash-table (50% of problems, 2.2x the industry average), array (100% of problems, 1.7x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are array (100%), dynamic-programming (50%), hash-table (50%), string (25%). Problems below are sorted by frequency, the ones at the top are asked most often.