As others have mentioned, you need to practice solving problems with increasing complexity. You can try Project Euler which has lot of mathematical/computer pro

As others have mentioned, you need to practice solving problems with increasing complexity. You can try Project Euler which has lot of mathematical/computer programming problems. https://projecteuler.net/problems https://projecteuler.net/problems You can also try daily programmer subreddit http://www.reddit.com/r/dailyprogrammer http://www.reddit.com/r/dailyprogrammer If you want to practice with Bioinformatics problems: http://rosalind.info/problems/list-view/ http://rosalind.info/problems/list-view/