At first, the interviewer asked about my background according to my resume. I applied for a Data Mining Software Engineering position, so the first question the interviewer asked me was the difference between classification and clustering. He then asked me to convert a string of random numbers into float numbers and further requested me to modify the code to apply to hexadecimal numbers. The whole process took me about 30 minutes. The questions were not tough, and the chat was very friendly. Personally, I very much enjoyed the process.

Transfer the hexadecimal string "f3a6.123f" into a decimal number.