You have one billion numbers, implement getRandom() which returns a random number from them. Constaints: 1. No duplicate returning value. 2. getRandom() will at most be invoked 100 million times. Then optimize for space.
Programmer Analyst Ii Interview Questions
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The hardest problem posed was the C# function I had to write. Write a function that accepts a character parameter such as "8" and then returns its digit value which would be 8 in this case. You cannot use any helper functions, casting or conversion functions. int ParseCharToInt(char c)
Unusual sort: sort an array A such that: A[0]<A[1]>A[2]<A[3]>A[4]<A[5].............
Given an array of numbers [1,3,3,5,9,4,1,10,9,7,2,7], Write a php function that will print numbers that are not duplicated in array. [5,4,10,2]
Find the number f set bits in an integer
Why are manhole covers round?
Write a Java program that takes a 2D bitmap (represented as a 1D array of integers), and reverses it about its vertical axis.
find and output the given number's shortest square sum. like input: 12=2^2+2^2+2^2 (not 3^2+1^2+1^2+1^2) output: {2 2 2}
You're given a binary tree and pointers to two nodes in the tree. Describe the fastest algorithm you can come up with to determine the closest common ancestor.
a. Given a function double f(double x), 0<=x<=1, f(x) is increasing. f(0)<0, f(1)>0. Find x s.t. f(x)\approx 0.
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