Dear friends,

I come from robotics background, so naturally I have taken less courses from CS. I have a masters in robotics and close to 2 years of work experinece as a robotic software engineer. During my work time I often write c++ code for various tasks(vision , control, ROS .. ) , I never felt that I lack skill or understanding for problem solving in the work. I started leetcode in order to improve and do better on possible technical interviews in the future. However I am frasturated that I am hardly able to submit complete solutions for most of the problems here , and this has effected my confidence.

I would like to kindly ask for your suggestions to do better, especially if you had the same feeling when starting the leedcode, How did you get confident , I want to know what does it take to solve a medium difficulty question in 20 mins ?

Thanks a lot for your time.