Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
5th Edition
ISBN: 9780134801155
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 12PE
Password Weakness Detector
Design a
- Fewer than 8 characters
- Does not contain at least one uppercase letter and one lowercase letter
- Does not contain at least one numeric digit
- Does not contain at least one special character (a character that is not a letter or a numeric digit)
- Is a sequence of consecutive uppercase letters (such as ABCDE)
- Is a sequence of consecutive lowercase letters (such as abcde)
- Is a sequence of consecutive numeric digits (such as 12345)
- Is a repeating sequence of characters (such as ZZZZZ or 55555)
The program should display messages indicating whether any of these weaknesses are found in the password.
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D. S. Malik, Data Structures Using C++, 2nd Edition, 2010
Methods (Ch6) - Review
1. (The MyRoot method) Below is a manual implementation of the Math.sqrt() method in Java.
There are two methods, method #1 which calculates the square root for positive integers, and
method #2, which calculates the square root of positive doubles (also works for integers).
public class SquareRoot {
public static void main(String[] args) {
}
// implement a loop of your choice here
// Method that calculates the square root of integer variables
public static double myRoot(int number) {
double root;
root=number/2;
double root old;
do {
root old root;
root (root_old+number/root_old)/2;
} while (Math.abs(root_old-root)>1.8E-6);
return root;
}
// Method that calculates the square root of double variables
public static double myRoot(double number) {
double root;
root number/2;
double root_old;
do {
root old root;
root (root_old+number/root_old)/2;
while (Math.abs (root_old-root)>1.0E-6);
return root;
}
}
Program-it-Yourself: In the main method, create a program that…
Chapter 12 Solutions
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
Ch. 12.2 - Prob. 12.1CPCh. 12.2 - Prob. 12.2CPCh. 12.2 - Design an algorithm that determines whether the...Ch. 12.2 - Design an algorithm that determines whether the...Ch. 12.2 - Prob. 12.5CPCh. 12.2 - Prob. 12.6CPCh. 12 - Prob. 1MCCh. 12 - Prob. 2MCCh. 12 - If the str variable contains the string "berry",...Ch. 12 - If the str variable contains the string "Redmond",...
Ch. 12 - Prob. 5MCCh. 12 - Prob. 1TFCh. 12 - Prob. 2TFCh. 12 - If the String variable str contains the string...Ch. 12 - The insert library module automatically expands...Ch. 12 - Prob. 5TFCh. 12 - Prob. 6TFCh. 12 - Prob. 7TFCh. 12 - Prob. 1SACh. 12 - If the following pseudocode were an actual...Ch. 12 - Prob. 3SACh. 12 - Prob. 4SACh. 12 - Prob. 5SACh. 12 - Design an algorithm that counts the number of...Ch. 12 - Prob. 2AWCh. 12 - Design an algorithm that counts the number of...Ch. 12 - Design an algorithm that deletes the first and...Ch. 12 - Design an algorithm that converts each occurrence...Ch. 12 - Design an algorithm that replaces each occurrence...Ch. 12 - Assume the following declaration exists in a...Ch. 12 - Prob. 1DECh. 12 - Prob. 2DECh. 12 - Prob. 3DECh. 12 - Prob. 1PECh. 12 - Sentence Capitalizer Design a program that prompts...Ch. 12 - Prob. 3PECh. 12 - Sum of Digits in a String Design a program that...Ch. 12 - Prob. 5PECh. 12 - Alphabetic Telephone Number Translator Many...Ch. 12 - Word Separator Design a program that accepts as...Ch. 12 - Pig Latin Design a program that reads a sentence...Ch. 12 - Prob. 9PECh. 12 - File Encryption File encryption is the science of...Ch. 12 - File Decryption Filter Design a program that...Ch. 12 - Password Weakness Detector Design a program that...
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