Five rounds of interviews including two telephonic and three face to face.
I applied through an employee referral. The process took 2 days. I interviewed at Yahoo India
Interview
One telephonic and followed by 4 F2F rounds.
On my work and DS and Algo and computer fundamentals.
It was very nice to appear the face to face and I was able to answer most of the questions.
That to I applied for the same group where my friend was already working.
The Yahoo! office was located in EGL and office ambiance also very nice.
I applied through a recruiter. The process took 1 week. I interviewed at Yahoo India (Bengaluru) in Apr 2013
Interview
The interview was very well coordinated and I could finish 4 rounds with in a span of 3 hours.The interviewers were almost coming in tandem, with almost no gap between various rounds.First round was telephonic which was completely c++ with questions related to virtual functions, smart pointer, reference counted smart pointer, memory management etc.
Next rounds were in person:
2nd round : algorithms
3rd round : data structure and OS concepts
4th round : puzzle round
5th Round : Manager round.