I. Answer part A,B, C and D.

1a)

Count the number of times a given char occurs in a given range of a String parameter (i.e. starting at a given start index, and up to but not including and end index). If end is greater than the length of the String, then the method should stop looking at the end of the String.

countCharsInRange("java", "v", 1, 2) → 0
countCharsInRange("java", "v", 0, 2) → 0
countCharsInRange("java", "v", 0, 3) → 1

1b)

Return a new String that removes all copies of the given char ch from the given String

removeChar("dog", "o") → "dg"
removeChar("cat", "o") → "cat"
removeChar("aaa", "a") → ""

1c)

Return the number of times the letter 'a' is directly followed by the letter 'b' in the given String.

countAB("abc") → 1
countAB("wxyz") → 0
countAB("bcaca") → 0

1d)

Return a new String that is a copy of the given String with each character copied the given number of times. Assume that n is 0 or more.

eachCharNTimes("abc", 2) → "aabbcc"
eachCharNTimes("xyz", 3) → "xxxyyyzzz"
eachCharNTimes("a", 5) → "aaaaa"

Project : facial recognition system

use the DEEP method to reflective writing. The four steps in this method are:

• 2.1 D - Describe experience (past or present).
  1. Describe the problem
• 2.2 E - Explore or consolidate new learning
  1. Read/Research about the problem
• 2.3 E - Evaluate/analyse/self reaction
• 2.4 P - Plan future learning

How would you describe some of the ER design limitations, and discuss how understanding these limitations will influence how you choose to model a particular situation so that you are able to represent the things that are most important?

Consider an array A[1 · · · n] which is sorted and then rotated k steps to the right. For example, we might start with the sorted array [1, 4, 5, 9, 10], and rotate it right by k = 3 steps to get [5, 9, 10, 1, 4]. Give an O(log n)-time algorithm that finds and returns the position of a given element x in array A, or returns None if x is not in A. Your algorithm is given the array A[1 · · · n] but does not know k. You can use C, C++, Java, or Python to solve this problem (ask the instructor if you have another programming language in mind). Python3 pls

*** Using Python ***

Your program must prompt the user for their city or zip code and request weather forecast data from openweathermap.org. Your program must display the weather information in an READABLE format to the user.

Requirements:

• Create a Python Application which asks the user for their zip code or city.
• Use the zip code or city name in order to obtain weather forecast data from: http://openweathermap.org/
• Display the weather forecast in a readable format to the user.
• Use comments within the application where appropriate in order to document what the program is doing.
• Use functions including a main function.
• Allow the user to run the program multiple times.
• Validate whether the user entered valid data. If valid data isn’t presented notify the user.
• Use the Requests library in order to request data from the webservice.
• Use Python 3.
• Use try blocks when establishing connections to the webservice. You must print a message to the user indicating whether or not the connection was successful.

*** also formatted into imperial units. Site defaults into Kelvin. ***

1. What is the fundamental equation that guides changes to a weight w_ij in a BP network.   Describe its components.

2. Multi-layer BP neural networks have no proof of converging to an optimal solution. Is this true? If it is, then why do we bother to use them?

Safaricom service provider has assigned you a task in their software section to design an application that can be used by wholesalers to buy their products. Your duty is to implement the data structure which can be used to store the inventory of the warehouse containing the products. The data structure should be able to add a product with an associated code indicating its likelihood to spoil, remove a product that is most likely to spoil, and return the overall number of products in the inventory.

i.          Describe the data structure you would use and give reasons.

ii.         With reference to algorithms, explain the terms time efficiency and space efficiency.

iii.        Describe a non-linear data structure. Give examples and operations in which you might perform on such a structure.         

What is enhanced ER Model? Explain extended ER features: Specialization, Generalization and Aggregation with your clear definitions/ideas/differences in your own words and give at least one appropriate example for each one of them.

, design the information security of an organization

The need to build a new infrastructure to utilize digital technology is constantly increasing, but it is difficult to secure new infrastructure by increasing the number of system resources required indefinitely. If the cost of IT infrastructure is calculated by adding up (1 )fixed and (2) operational costs, what difference will each cost show before and after the introduction of the cloud?

Discuss the interdependence that exists between Database System Development Life Cycle stages.

Q1(a) A class named “Employee” holds information like employee code, name,gender, year of joining. Write a program in C++ to create three objects of employee and enter some data into it through setters. Make getters and setters for all employee information. Then ask the user to enter current year. Display the names of those employees whose tenure is 2 or more than 2 years according to the given current year only using getters

(b)A class named “Employee” holds information like employee code, name,gender, year of joining. Write a program to create five hundred objects (Array of employee objects )of employee and enter some data into it through setters. Make getters and setters for all employee information. Then ask the user to enter current year. Display the names of those employees whose tenure is 5 or more than 5 years according to the given current year only using getters.
Note: employee code is automatically assigned to newly created object by calling default constructor

(b) Define a class StudentReport with the following specification:
Private members :
adno 4 digit admission number
name 20 characters
marks an array of 5 floating point values
average average marks obtained
GETAVG() a function to compute the average obtained in five subject
Public members:
READINFO() function to accept values for adno, name, marks. Invoke the function   
GETAVG()

DISPLAYINFO() function to display all data members of StudentReport on the screen.
You should give function definitions outside the class using scope resolution operator.

Use C++ to answer