Amazon On Site round questions

1. Given an n, find the least significant non zero digit in n!, given that n! can go out of the number range. Example : if n=5, n!=120, return 2
Hint: what we need is (n!)%10 when we after removing all the 0's on the right side
and (xy)%10 = (x%10*y%10)%10

2. Design an editor

3. Given a,n find power(a,n)

Amazon Interview - second round

Hi,

I had my second round of phone interview on 8th October at 3:00PM. Questions were

1. Given an array A, how to circularly rotate the array for m times.
2. Given an array, it has elements first in increasing order then in decreasing order. How do you find the maximum element.
3. Given an array of characters A and a set S of characters, how do you remove the characters in the array A that are in the set S.
4. Write a function f(x,y) where x is the hours and y is the minutes, find the angle between the hours hand and minutes hand at the time x:y.