Programming & Computer Science Answers

  Develop a stack using C program to check whether the given expression [a+[b+(c+d)]} is balanced or not

create a program that is expected to monitor access and attempted accesses to your network. All logon activities should be logged. All passwords should have a minimum length of 6 characters and they should use a mixture of letters, numbers and capital letters. Users are required to change their password every 30 days. All users are to get 700 MB secure storage space on the server for personal use. All home folders must be protected in such a way that only the owner can access his/her home folder. All users except those in production should be able to retain their individual settings regardless of the workstation they are using. Users in Production should not be able to change their individual setting and any changes should be discarded on log off. 

Examine what Big-O notation is and explain its role in evaluating efficiencies of algorithms. 

1. The Fibonacci numbers are the numbers in the following integer sequence.

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ……..

• Factorial of a non-negative integer, is multiplication of all integers smaller than or equal to n.

Write the Python program code for the above two algorithms and critically evaluate their efficiencies using Big-O notation.

Algorithm for an application for a Pizza delivery company. The application must provide a place for the user to enter their contact information (address, cell, telephone, e-mail) and some of the contact information should be displayed when the order is placed. Your application should have a picture logo and company name. Provide selections such as small, medium and large for pizza (Vegetarian, Hawaiian, Something Meaty.

Algorithm for a program that calculates the take home pay of an employee. The two employees are salaried and hourly. Allow the user to input employee type. If an employee is salaried, allow the user to input the salary amount. If an employee is hourly, allow the user to input the hourly rate and the number of hours clocked for the week. For hourly employees, overtime is paid for hours over 40 at a rate of 1.5 of the base rate. For all employees’ take-home pay federal tax of 18% is deducted. A retirement contribution of 10% and a social security tax rate of 6% should be deducted. Use appropriate constants. Design an object oriented solution. 

Algorithm for a solution that prints the amount of profit an organisation receives based on its sales. The more sales documented, the larger the profit ratio. Allow the user to input the total sales figure for the organisation. Compute the profit based on the following table. Display the sales and profit formatted with commas, decimals, and a rand symbol. Display the profit ratio formatted with a percent symbol. 0 – R1000: 3.0% / R1000.01 – R5000: 3.5% / R5000.01 – R10000: 4.0% / over R10000: 4.5%

The Ministry of Home Affairs and Immigration would like to introduce an automated id number and passport generation system. The system takes into consideration the following:

• To generate the id number it takes two last digits from the Year of birth, two digits for the month of birth plus two digits for the date of birth, then finally adds a five-digit postfix number.
• To generate the passport is similar, the system takes the first part from the id number with the year, month and date then it adds the "P-NAM" prefix and finally adds the last two digits from the id number's five-digit postfix number

Your task is to create a program that can achieve the above requirements to assist the ministry automate it’s operations

Input

Input is a single line with the person's first name, date of birth(format YYYY-MM-DD) and five-digit postfix through keyboard input, all separated by single spaces