How to overcome software quality dilemma

Write a method called swapPairs that switches the order of values in an ArrayList of strings in a pairwise fashion. Your method

arsen [322]

Answer:

import java.util.ArrayList;
public class Main {
public static void main(String[] args) {
ArrayList<String> strList =new ArrayList<String>();
strList.add("to");
strList.add("be");
strList.add("or");
strList.add("not");
strList.add("to");
strList.add("be");
strList.add("hamlet");
swapPairs(strList);
System.out.println(strList);
}
public static void swapPairs(ArrayList<String> list){
for(int i=0; i < list.size()-1; i+=2){
String temp = list.get(i);
list.set(i, list.get(i+1));
list.set(i+1, temp);
}
}
}

Explanation:

Firstly, let's create a method swapPairs that take one ArrayList (Line 18). In the method, use a for-loop to traverse through each item in the ArrayList and swap the items between the current items at index-i and at index-i+1 (Line 19-22). The index-i is incremented by two in next loop and therefore the next swapping will proceed with third and fourth items and so forth.

In the main program, create a sample ArrayList (Line 5-12) and then test the method (Line 14) and print the output (Line 15). We shall get [be, to, not, or, be, to, hamlet].

7 0

3 years ago

2.36 LAB: Warm up: Variables, input, and casting (1) Prompt the user to input an integer, a double, a character, and a string, s

Westkost [7]

Answer:

The entire program is:

#include <iostream>

using namespace std;

int main() {

int userInt;

double userDouble;

char userChar;

string userString;

cout<<"Enter integer:"<<endl;

cin>>userInt;

cout<<"Enter double:"<<endl;

cin>>userDouble;

cout<<"Enter character:"<<endl;

cin>>userChar;

cout<<"Enter string:"<<endl;

cin>>userString;

cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl;

cout<<endl;

cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl<<userString<<" "<<userChar<<" "<<userDouble<<" "<<userInt<<endl;

cout<<endl;

cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl<<userString<<" "<<userChar<<" "<<userDouble<<" "<<userInt<<endl<<userDouble<<" cast to an integer is "<<(int)userDouble;

return 0; }

The program in C language:

#include <stdio.h>

int main() {

int userInt;

double userDouble;

char userChar;

char userString[50];

printf("Enter integer: \n");

scanf("%d", &userInt);

printf("Enter double: \n");

scanf("%lf", &userDouble);

printf("Enter character: \n");

scanf(" %c", &userChar);

printf("Enter string: \n");

scanf("%s", userString);

printf("%d %lf %c %s\n", userInt, userDouble, userChar, userString);

printf("\n");

printf("%d %lf %c %s\n%s %c %lf %d \n", userInt, userDouble, userChar, userString, userString, userChar, userDouble, userInt);

printf("\n");

printf("%d %lf %c %s\n%s %c %lf %d\n%lf cast to an integer is %d \n", userInt, userDouble, userChar, userString, userString, userChar, userDouble, userInt, userDouble, (int)userDouble); }

Explanation:

Lets do the program step by step:

1) Prompt the user to input an integer, a double, a character, and a string, storing each into separate variables. Then, output those four values on a single line separated by a space:

Solution:

The program is:

#include <iostream> //to use input output functions

using namespace std; //to identify objects cin cout

int main() { //start of main method

//declare an integer, a double, a character and a string variable

int userInt; //int type variable to store integer

double userDouble; //double type variable to store double precision floating point number

char userChar; //char type variable to store character

string userString; //string type variable to store a string

cout<<"Enter integer:"<<endl; //prompts user to enter an integer

cin>>userInt; //reads the input integer and store it to userInt variable

cout<<"Enter double:"<<endl; //prompts user to enter a double type value

cin>>userDouble; //reads the input double value and store it to userDouble variable

cout<<"Enter character:"<<endl; //prompts user to enter a character

cin>>userChar; //reads the input character and store it to userChar variable

cout<<"Enter string:"<<endl; //prompts user to enter a string

cin>>userString; //reads the input string and store it to userString variable

cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl; //output the values on a single line separated by space

So the output of the entire program is:

Enter integer: 99 Enter double: 3.77 Enter character: z Enter string: Howdy 99 3.77 z Howdy

(2) Extend to also output in reverse.

Now the above code remains the same but add this output (cout) statement at the end:

cout<<userString<<" "<<userChar<<" "<<userDouble<<" "<<userInt;

Now the output with the same values given as input is:

Enter integer: 99 Enter double: 3.77 Enter character: z Enter string: Howdy

99 3.77 z Howdy Howdy z 3.77 99

(3) Extend to cast the double to an integer, and output that integer.

The rest of the code remains the same but add the following output (cout) statement in the end:

cout<<userDouble<<" cast to an integer is "<<(int)userDouble;

Now the output with the same values given as input is:

Enter integer: 99 Enter double: 3.77 Enter character: z Enter string: Howdy 99 3.77 z Howdy Howdy z 3.77 99 3.77 cast to an integer is 3

3 0

3 years ago

Does anyone know how to permanently delete photos on a dell computer? For my cousin.

strojnjashka [21]

Answer: If your trying to get rid of em. The best way to do that is to put them in the recyling bin and then empty it. Doing that will delete them off your computer so they can't be found.

Explanation: Also keep in mind that whether or not you delete them they'll still be on your hard drive.

6 0

2 years ago

Web designers use programming languages to write websites. A True <br> B False

KonstantinChe [14]

Answer: False

Explanation:

Web designers are not using programming languages to write websites.

6 0

2 years ago

Read 2 more answers

A range in which a measuring instrument or controller does not respond is the

cricket20 [7]

Answer:

Dead band

Explanation:

In Instrumentation, dead band is defined as a range in which a measuring instrument or controller does not respond. It is also known as the neutral zone or dead zone and it is usually caused by packing friction or unbalanced forces.

4 0

3 years ago