J.P. Morgan Quantitative Analyst interview questions

Three telephonic rounds from London. All technical involving. C++, probability, smart pointers, bit of finance, sorting and data structures, puzzles, dutch flag problem. one HR round. one face to face round. most problems were standard. The HR round was more of a formality and asked about future, weakness and strengths, why do you want to switch job after just an year? The interviews were telephonic and all were conducted within a week.