COMPSCI 61A Study Guide - Midterm Guide: Cheat Sheet, Mutation, Object-Oriented Programming

• School: Berkeley
• Department: Computer Science
• Course: COMPSCI 61A
• Professor: all

Document Summary

If you are not sure of your answer you may wish to provide a brief explanation. All the work on this exam is my own. (please sign) 2: (12 points) mutation and non-local assignment. The berkeley banking commune only accepts berkeley bucks. Each valid buck has a unique serial number. The bank tracks these serial numbers to make sure that nobody is photocopying its bucks. (a) (4 pt) the higher-order function make deposit returns a single-argument function deposit that takes a. If all serial numbers ever deposited to that function are unique, deposit returns the number of bucks ever deposited. If a duplicate serial number is ever deposited, deposit will forever return the string "fraud". Do not include any additional return statements; one is provided for you. def make_deposit(): "fraud" fraud = false contents = [] def deposit(bucks): if fraud: return "fraud" return len(contents) return deposit.