The interviewer first asked me to tell something about myself. Then he asked my favorite subjects
- what are virtual functions in C++? how are calls to virtual functions resolved at runtime?
- what is the need for virtual destructors?
- if there are virtual destructors then why there are no virtual constructors?
- there are n mountains. you are given a 1d array A where A[i] represents the height of mountain i+1. How will you find a valley in that array.( A valley is a value in an array which is smaller than both its left and right neighbors ).
Ans 4 this question is similar to finding peak element in an array, given on geeks for geeks
- he asked me the famous puzzle in which there are 1000 identical bottles. one of them contains poison. A person after drinking the poison dies after 24 hours. You have to identify the poisonous bottle in 1 day. minimum no of the prisoners needed to find the poisonous bottle.
ans 10( 1000 can be represented in binary using 10 bits .)
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