Code practice:

Leetcode: www.leetcode.com

HackerRank: www.hackerrank.com

Topcoder: https://www.topcoder.com/

Interview experience share:

GeeksforGeeks Interview Corner: http://www.geeksforgeeks.org/about/interview-corner/

Selective Coding Blog (in C++):

喜刷刷：http://bangbingsyb.blogspot.com/

水中的鱼: http://fisherlei.blogspot.com/

GitBook: LeetCode题解: https://www.gitbook.com/book/siddontang/leetcode-solution/details

Ethan Li 的技术专栏: https://segmentfault.com/blog/ethanli

Buttercola: http://buttercola.blogspot.com/

I seek you, geeks!： http://icqgeeks.com/

How to crack interviews ...