Answer:
Direct data access reduces the speed of retrieving data from memory or storage. Retrieving data and storing it in a cache memory provides direct access to data in the storage.
Explanation:
Sequential memory access, as the name implies, goes through the memory length location in search of the specified data. Direct memory access, provides a memory location index for direct retrieval of data.
Examples of direct and sequential memory access are RAM and tapes respectively. Data in sequential memory access can be access directly by getting data in advance and storing them in cache memory for direct access by the processor.
What kind of skill is persuasion?
neutral skill
hard skill
soft skill
high skill
Answer:
soft skill
Explanation:
Retail products are identified by their Universal Product Codes (UPCs). The most commonform of a UPC has 12 decimal digits: The first digit identifies the product category, the nextfive digits identify the manufacturer, the following five identify the particular product, andthe last digit is acheck digit. The check digit is determined in the following way:
• Beginning with the first digit multiply every second digit by 3.
• Sum all the multiplied digits and the rest of the digits except the last digit.
• If the (10 - sum % 10) is equal to the last digit, then the product code is valid.
• Otherwise it is not a valid UPC.The expression is:sum= 3.x1+x2+ 3.x3+x4+ 3.x5+x6+ 3.x7+x8+ 3.x9+x10+ 3.x11where the x’s are the first 11 digits of the code.
If you choose to add the last digit also in the second step and if the sum is a multiple of 10,then the UPC is valid. Either way, you still need to perform the modular division to checkwhether the given number is a valid code.In this problem, you need to use either a string or long long integer type for the product codebecause it is 12 digits long. If you use string, you can convert one character substring of thestring in to a single digit integer from left to right using the function stoi(str.substr(i,1)).This way you do not need to get last digit of the number and then divide the number by 10.
in c++
problem 3
Translate the following pseudocode for randomly permuting the characters in a string into a C++ program. Read a word. repeat word.length() times Pick a random position i in the word, but not the last position. Pick a random position j > i in the word. swap the letters at positions j and i. Print the word. Please work on this problem after we learn to generate random numbers in the class which is on Wednesday the latest. These problems only deal with simple loop while, for and do loops. You will get a second set of problems next week on nested loops.
Answer:
#include <iostream>
#include <cmath>
using namespace std;
int main(){
string upc;
char last;
cout<< "Enter UPC number: ";
cin >> upc;
if (upc.size() == 12){
last = upc[-1];
} else{
return 0;
}
cout<< last;
char myArr[upc.length()];
for (int i = 0 ; i < upc.substr(0,11).length(); ++i){
if (upc[i]%2 != 0){
myArr[i] = upc[i] * 3;
}
else{
myArr[i] = upc[i];
}
}
int sum = 0;
for (int x = 0; x < sizeof(myArr); ++x){
sum += (int)myArr[x] - '0';
}
if (sum% 10 == last){
cout<<"UPC number is valid";
}
else{
cout<<"Invalid UPC number.";
}
}
Explanation:
The UPC number in the c++ source code input must be 12 digits long for the rest of the code to execute. The code checks the validity of the number by comparing the reminder of the sum division with the last digit in the UPC number.
meaning of leanness in organization
If an app asks for a user's age, it may be because the app requires a user to be over a certain age to use some of the services it provides. Write a function called checkAge that takes one parameter of type String. The function should try to convert this parameter into an Int value and then check if the user is over 18 years old. If he/she is old enough, print "Welcome!", otherwise print "Sorry, but you aren't old enough to use our app." If the String parameter cannot be converted into an Int value, print "Sorry, something went wrong. Can you please re-enter your age?" Call the function and pass in userInputAge below as the single parameter. Then call the function and pass in a string that can be converted to an integer.
Go back and update your function to return the age as an integer. Will your function always return a value? Make sure your return type accurately reflects this. Call the function and print the return value.
func checkage(age: String)->Int?
{
if let age_type = Int(age)
{
if age_type > 18 {
return "Welcome!"
}
else if age_type < 18 {
return"Sorry, but you aren't old enough to use our app."
}
}
else {
return "Sorry, something went wrong. Can you please re-enter your age?"
}
return age_type
}
Answer and Explanation:
Here the programming language swift is being used. There is a slight error in the program shown above:
var userInputAge=9
func checkage(age: String)->int?
{
if let age_type = Int(age)
{
if age_type > 18 {
return "Welcome!"
}
else if age_type < 18 {
return"Sorry, but you aren't old enough to use our app."
}
}
else {
return "Sorry, something went wrong. Can you please re-enter your age?"
}
return age_type
}
The program should be revised :
func checkage(age: int?)->String
{
if let age_type = Int(age)
{
if age_type > 18 {
return "Welcome!"
}
else if age_type < 18 {
return"Sorry, but you aren't old enough to use our app."
}
}
else {
return "Sorry, something went wrong. Can you please re-enter your age?"
}
return age_type
}
We call the functions :
checkage(userInputAge)
checkage("15")
Note: we revised the program for errors in the first line of the code where the int optional parameter(int?) was supposed to be used instead of the String parameter in the function. We then called the function using the userInputAge variable defined as the parameter and then we now also used a String as the parameter for calling the function the second time.
Answer:
def checkage(age: "String")->int:
if age >= 18:
return "Welcome!"
return "Sorry, but you aren't old enough to use our app."
for _ in iter(list,0):
myage = int(input("Please enter your age: "))
if myage is int(myage):
result = checkage(myage)
print(result)
break
print("Sorry, something went wrong. Enter integer value as age.")
Explanation:
The python code above lets the user input the age value for continuous comparison. If the age is an integer, it checks to know if the age is greater than 18 or not. If yes, it returns "Welcome!" else "Sorry, but you aren't old enough to use our app". But if the age is not an integer, it displays the message "Sorry, something went wrong. Can you please re-enter your age?" then prompts the user again for the age.
Note: the ': "String" ' and "->int" is for documentation purposes. They are used to describe the type of parameters (for later) and return value (the former).
Which statement is true? A. Pseudocode uses shapes such as rectangles and diamonds to plan a program. B. You only use comments for pseudo code. C. A flowchart uses comments that can be kept as a permanent part of a program. D. A comment line begins with # Please hurry also you can only choose one answer so idk which one thank you
Answer:
D) A comment line begins with #
Explanation:
Comments are used in programming to explain what a line or block of code is doing.
It helps the programmer easily remember what their code was about when they come back to it having left it for a while.
Also comments help other programmers understand code written by one programmer.
A comment or an in-line comment usually begins with #. That way the computer skips it and doesn't regard it as a line of code.
Answer: D. A comment line begins with #.
Explanation:
In the text, it stated, "The easiest way to add a comment is to start the line with the pound sign (#)."
(Comments are notes that allow you to write anything without affecting the code itself. Comments can be utilized to indicate when and how you later changed a program, and provide a description of the changes.)
I hope this helped!
Good luck <3
Question 1 (1 point)
What is an advantage of the wireless option for peripheral?
Which is a conditional statement?
If it is sunny, we can play ball.
It is sunny today.
It is sunny or rainy.
It is sunny across the street, but not sunny here.
Answer:
it is 1, I know this because i got 100% on my quiz
Explanation:
what are the advantages of using a folder?
Answer:
1. easy access to files
2. better organization
Explanation:
In the rapid application development (RAD) model, the _____ phase focuses on program and application development tasks similar to the SDLC.A) requirements planningB) user designC) constructionD) cutover
Answer:
C) construction
Explanation:
Rapid application development abbreviated RAD is an agile software development strategy that reduces time spent on planning so that prototype development takes priority and project turnaround time is greatly reduced consequently. There are four phases in rapid application development :
requirements planning, user design, construction, cutover
The construction phase is the third stage in rapid application development. This stage builds on the progress of the previous stages- the requirements planning stage and user design stage- to go ahead to finalize the application development which has been agreed on through iterations and communication between developer and client in the user design stage. In other words, this stage basically takes the ideas, prototypes and beta products from the previous stages and makes it into a real final product. The rationale or perks behind this is that other problems such as what product would do or look like or any changes or modifications have been worked out in previous stages thereby speeding up development in this stage.
what is the norm that psychoanalysis of Freud deviates?
Answer:
Freud deviates from the norm of current mainstream psychology which has more or less lost its way - if it ever had one - under the influence of the same pressures which produce our dysfunctional politics and our troubled societies at large (technological change, globalisation, and so on).
Explanation:
Creds to Quora