Hi Team,I need your valuable suggestions and guidance for cracking Data structure and algo interviews.
I'm 2014 ECE passout .I have 5 years of experience which majorly in service based companies as a front end developer.Being a front end developer i never came across data structure concepts except arrays also in college i did't have in my syllubus.Now i lost my job and starting from fresh and every company is focusing on Data Structure and algorithm which i'm finding very hard.I'm not able to focus on anything and 3 months without job.
Kindly let me know from where and how i should start for ace the interview. Also I'm finding very hard to solve the problem without seeing the solution once.

All valuable comments are welcome.Thanks in advance.