Searching An Infinite Array
December 9, 2016
Given an array of positive integers in ascending order, of infinite size, find the index of an integer k in the array, or determine that it does not exist. Your solution must work in time logarithmic in the index of the requested integer.
Your task is to write a program that finds the requested integer. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.
Programming Praxis 