CSI 519 — Spring 2021: Homework 2 Due: Feb 17 before 11:59pm 1. Define a function addnums which takes a list of integers and adds 0 to the leftmost element, 1 to the next one, and so on. Symbolically, given a list [x1, x2, . . . , xn], the function should return [x1, x2 + 1, x3 + 2, . . . , xn + n− 1]. Any other function you define must be local to the above definition. – addnums; val it = fn : int list -> int list – addnums nil; val it = [] : int list – addnums [0,0,0,0]; val it = [0,1,2,3] : int list – addnums [1,2,3,4,5,6]; val it = [1,3,5,7,9,11] : int list Practice problem: not for submission • Define a function samefactorset which takes two non-zero integers m and n and checks whether their absolute values have the same set of prime factors. For instance, 12 and 18 have the same set of factors, {2, 3}. You can assume that the inputs will be non-zero. Any other function you define must be local to the above definition. – samefactorset(12, 54); val it = true : bool – samefactorset(350, ~140); val it = true : bool – samefactorset(7007, 91); val it = false : bool – samefactorset(1, 64); val it = false : bool – samefactorset(1, 1); val it = true : bool 欢迎咨询51作业君
