Answer:
JAVA program to display the array elements both forward and backward is given.
public class MyProgram {
public static void main(String args[]) {
int len = 5;
int[] courseGrades = new int[len];
courseGrades[0] = 7;
courseGrades[1] = 10;
courseGrades[2] = 11;
courseGrades[3] = 9;
courseGrades[4] = 10;
System.out.println("The elements of array are ");
for(int i=0; i<len; i++)
{
System.out.print(courseGrades[i]+" ");
}
// new line is inserted
System.out.println();
System.out.println("The elements of array backwards are ");
for(int i=len-1; i>=0; i--)
{
// elements of array printed backwards beginning from last element
System.out.print(courseGrades[i]+" ");
}
// new line is inserted
System.out.println();
}
}
OUTPUT
The elements of array are
7 10 11 9 10
The elements of array backwards are
10 9 11 10 7
Explanation:
This program uses for loop to display the array elements.
The length of the array is determined by an integer variable, len.
The len variable is declared and initialized to 5.
int len = 5;
The array of integers is declared and initialized as given.
int[] courseGrades = new int[len];
We take the array elements from the question and initialize them manually.
First, we print array elements in sequence using for loop.
for(int i=0; i<len; i++)
To display in sequence, we begin with first element which lies at index 0. The consecutive elements are displayed by incrementing the value of variable i.
The array element is displayed followed by space.
System.out.print(courseGrades[i]+" ");
Next, we print array elements in reverse sequence using another for loop.
for(int i=len-1; i>=0; i--)
To display in reverse sequence, the last element is displayed first. The previous elements are displayed by decrementing the value of variable i.
At the end of each for loop, new line is inserted as shown.
System.out.println();
The length and elements of the array are initialized manually and can be changed for testing the program.
Loops are used to perform operations that would be repeated in a certain number of times; in other words, loops are used to perform repetitive and iterative operations
The loop statements are as follows:
for(int i = 0; i<sizeof(courseGrades)/sizeof(courseGrades[0]);i++){
cout<<courseGrades[i]<<" ";
}
cout<<endl;
for(int i=sizeof(courseGrades)/sizeof(courseGrades[0]) - 1; i >=0; i--){
cout<<courseGrades[i]<<" ";
}
cout<<endl;
The flow of the above loops is as follows
The first for loop prints the elements in a forward order.The second for loop prints the elements in a backward order.Read more about loops at:
https://brainly.com/question/11857356
The update expression of a for loop can contain more than one statement, e.g. counter++, total+= sales
True False
True.
Update expression conditions the iterations of a for loop. Counter++ is the most basic form of use, but others like total += sales are also valid.
Hope this helps.
r3t40
A B-tree can be ____ in three ways: inorder, preorder, and postorder.
A.
copied
B.
reversed
C.
traversed
Answer:
traversed
Explanation:
B-tree is a self balancing tree and it is a data structure which allows insertion, deletion operations.
inorder, preorder and post order, they all are traversing algorithms in the tree data structure.
inorder: first print left, then root and then right.
preorder: first print root, then left and then right.
postorder: first print left, then right and then root.
Therefore, the answer is traversed.
What is ment by WCF services in asp.net?How does it help in creating web pages?
Answer:
WCF - Windows Communication Foundation
Explanation:
WCF stands for Windows Communication Foundation.
The first version of WCF is released as a part of .NET 3.0.The later versions are 4.0 and 4.5.
WCF is used to build distributed applications. Distributed application is an application that where parts of it run on two or more systems.
For example,
We have a web application running on one server. If this web application is consuming a web server which is running on another server, then this
application is called distributed application.
The programmers can also build 3-tier web application. The 3-tiers are,
1. Presentation tier
2. Business tier
3. Data Access tier
If all 3 tiers are deployed on same machine, scalability can be an issue, if more number of users try to access the application.
If we deploy each tier on different machines, then it can handle multiple requests without degrading performance of an application.
WCF is also used to build interoperable applications. An interoperable application is an application where one application can communicate with any other application that is built on any platform.
So, the two advantages of using WCF are:
An enterprise application can use the services
provided by other.
we can have better scalability.
Earlier, we used to have web services and .NET Remoting to build distributed applications.
Web service was used to exchange messages in XML format using HTTP protocol. A .NET remoting was used to exchange messages in binary format using TCP protocol.
Microsoft unified these communicating technologies and named it as WCF.
Differentiate Between register and Memory location (
Answer:
Register-it contains all the instructions that are present in the processor.
Memory location- it is the particular memory address where the data is stored.
Explanation: Difference between register and memory location are as follows :-
Register are the found in the CPU internal storage and memory location is present on the RAM.Registers are faster in movement as compared to the memory location.Register has the capacity of holding of less data as compared to the memory location which can store data in large amount .What field would you use to store a value from another table?
A. Lookup
B. Hyperlink
C. Memo
D. AutoNumber
Answer:
A. Lookup
Explanation:
You would use the Lookup field to store a value from another table.
The Windows 8 file management interface is called _____.
A. Windows Manager
B. File Browser
C. File Manager
D. File Explorer
Answer:
D. File Explorer
Hope that helps!
Write a program that sorts an array of 10 integers using bubble sort. In the bubble sort algorithm, smaller values gradually “bubble” their way upward to the top of the array like air bubbles rising in water, while the larger values sink to the bottom. The bubble sort makes several passes through the array (of 10 items). On each pass, successive pairs of elements are compared. If a pair is in increasing order (or the values are identical), we leave the values as they are. If a pair is in decreasing order, their values are swapped in the array. The comparisons on each pass proceed as follows—the 0th element value is compared to the 1st, the 1st is compared to the 2nd, the 2nd is compared to the third, ..., the second-to-last element is compared to the last element.
Answer:
#include<iostream>
using namespace std;
int main(){
//initialization
int arr1[10] = {2,4,6,1,7,9,0,3,5,8};
int temp;
int size_arr;
//nested for loop
for(int i=0;i<size_arr-1;i++){
for(int j=0;j<size_arr-i-1;j++){
if(arr1[j]>arr1[j+1]){ //compare
//swapping
temp = arr1[j];
arr1[j]=arr1[j+1];
arr1[j+1]=temp;
}
}
}
//display the each element
for(int i=0;i<10;i++){
cout<<arr1[i]<<" ";
}
return 0;
}
Explanation:
Create the main function and declare the variable and defining the array with 10 values.
take the nested for loop, nested loop means loop inside another loop.
the outer loop traverse in the array from 0 to size-1.
and inside loop traverse from 0 to size -i-1, because for every cycle of the outer loop the one element is sorted at the end. so, we do not consider the element from the last for every cycle of the outer loop. That's why (size-i-1)
In the bubble sort, the first element compares with the second element and if the first id greater than the second then swap the value. so, for the above algorithm, we take the if statement and it checks the condition if the condition becomes true then the swap algorithm executes.
we take a third variable for swapping. after that, if the outer loop condition false it means all elements will traverse and then the loop will terminate.
and finally, take another for loop and display the output.
Final answer:
The answer provides a Python program example that uses the bubble sort algorithm to sort an array of 10 integers. The program defines a function, bubble_sort, which sorts the array in ascending order and then prints the sorted array.
Explanation:
To sort an array of 10 integers using the bubble sort algorithm, you can use the following program as a reference. Bubble sort compares adjacent elements and swaps them if they are in the wrong order. Here's a basic example in Python:
def bubble_sort(arr):
n = len(arr)
for i in range(n):
swapped = False
for j in range(0, n-i-1):
if arr[j] > arr[j+1]:
arr[j], arr[j+1] = arr[j+1], arr[j]
swapped = True
if not swapped:
break
return arr
# Example array:
numbers = [64, 34, 25, 12, 22, 11, 90, 88, 66, 23]
sorted_numbers = bubble_sort(numbers)
print("Sorted array is:", sorted_numbers)
This program will sort the given array of integers in ascending order. The function bubble_sort takes an array as input, performs the bubble sort algorithm, and returns the sorted array.
a. Is there any functional difference between the class being instantiated in the following two ways? Balanced bal = new Balanced ("abc", "xyz"); Balanced bal = new Balanced ("cab", "zxy"); b. Is there any functional difference between the class being instantiated in the following two ways? Balanced bal = new Balanced ("abc", "xyz"); Balanced bal = new Balanced ("abc", "zxy"); c. Is there any functional difference between the class being instantiated in the following two ways? Balanced bal = new Balanced ("abc", "xyz"); Balanced bal = new Balanced ("xyz", "abc"); d. What type is pushed onto the stack? A char? An int? An integer? explain. e. Under which circumstances is the first opeation performed on the stack (not counting the new operation) the top operation? f. What happens if the string expression, that is passed to the test method, is an empty string?
Answer:
A,B,C -NO
D-Value type like int,char..
E.pop
D. it throws null exception
Explanation:
(A,B,C)There is no functional difference but as the values passed to the parameterized constructor is different so you will get different outputs but functionality of the class didn't change
(D) stack is a data structure which stores value types where as heap stores object types.In.stack actual value of the variable stored and heap address of the object stored
(E)the top operation on stack is always pop once we inserted the elements in a stack.if there are no elements in stack pop results null
(D) if the string we passed is null or empty to the test method it returns exception we need to handle that
How do you write a computer program to convert a decimal number into binary, octal, and hexadecimal?
Answer:
#include <iostream>
using namespace std;
void hexadecimal(int dec)
{
char hexa[100];// character array to store hexadecimal number.
int i = 0;
while(dec!=0)
{
int digit = 0;
digit = dec % 16;// storing remainder.
if(digit < 10)//condition
{
hexa[i] = digit + 48;//storing digit according to ascii values.
i++;
}
else
{
hexa[i] = digit + 55; //storing respective character according to ascii values..
i++;
}
dec = dec/16;
}
cout<<"The corresponding Hexadecimal number is :- ";
for(int j=i-1; j>=0; j--)// printing in reverse order .
cout << hexa[j];
cout<<endl;
}
void Binary(int dec)
{
int bin[32];// integer array to store binary values.
int i = 0;
while (dec > 0) {
bin[i] = dec % 2;// storing remainder
dec = dec / 2;
i++;
}
cout<<"The corresponding Binary number is :- ";
for (int j = i - 1; j >= 0; j--) // printing in reverse order
cout << bin[j];
cout<<endl;
}
void Octal(int dec)
{
int oct[100];// integer array to store octal values.
int i = 0;
while (dec != 0) {
oct[i] = dec % 8;// storing remainder
dec = dec / 8;
i++;
}
cout<<"The corresponding Octal number is :- ";
for (int j = i - 1; j >= 0; j--) // printing in reverse order
cout << oct[j];
cout<<endl;
}
int main() {
int d,bin,oct,hex;
cout<<"Enter decimal number"<<endl;
cin>>d;//taking input.
Binary(d);
Octal(d);
hexadecimal(d);
return 0;
}
OUTPUT:-
Enter decimal number
10
The corresponding Binary number is :- 1010
The corresponding Octal number is :- 12
The corresponding Hexadecimal number is :- A
Enter decimal number
256
The corresponding Binary number is :- 100000000
The corresponding Octal number is :- 400
The corresponding Hexadecimal number is :- 100
Explanation:
I have built 3 function of type void Hexadecimal,Binary,Octal all the functions take decimal integer as argument.They print their respective number after conversion.
So main approach is that :-
1.Take an array to store the digit on dividing.
2.Find the remainder on dividing it by corresponding number (for ex:- if binary divide by 2).
3.Store each remainder in the array.
4.Divide the number until it becomes 0.
5.Print the array in reverse.
what are the elements of a Software Process Improvement (SPI) modle?
Answer: Current Situation Evaluation, Improvement Planning, Improvement Implementation, Improvement Evaluation are the elements of SPI
Explanation:
SPI modle plans to achieve a desired task of software development in terms of Current Situation Evaluation, Improvement Planning, Improvement Implementation, Improvement Evaluation, with each having a specified and detailed role to play in the software development.
Indirect recursion requires the same careful analysis as direct recursion.
True
False
Answer: True
Explanation: Direct recursion is the process when a function call for itself and indirect recursion is the recursion process where a function calls another function and the result driven is the actual function . The aim of both the recursion process to provide with appropriate result by calling function so this declares that both the process indirect and direct recursion requite same careful analysis .
The true or false questions.
The command: find -empty -type f -exec rm { } \; will remove all empty regular files, starting from the current directory
Answer:
true
Explanation:
The command:
find -empty -type f -exec rm { } \;
carries out the following steps.
1) Finds all the empty files in the current directory and its subdirectories.
2) For each of the identified files, it executes the command specified as the parameter to exec option,namely, rm <filename>.
So effectively it removes all empty files in the directory tree starting at the current directory.
Which of the following is categorized as an indirect payment
portion of employee compensation?
a. Wages
b. Salaries
c. Employer-paid insurance
d. Commissions
Answer: C. Employer-paid insurance
Explanation: Employees can receive benefits i.e. financial payments in two ways, direct and indirect payments. Direct financial payments are all those paid directly by the employer to the employee, which means the employee can use those payments immediately after payment, such as wages, salaries, various bonuses, commissions, etc. Indirect benefits are all those paid by the employer to an employee from which the employee will benefit during or after a fixed period of time. These are, for example, life, health, so all kinds of insurance, paid holidays, pension funds, etc.
In the following method call, which argument is an array?
myObject.some_method(x, y, 3);
a) x is an array
b) y is an array
c) both x and y are arrays
d) neither x nor y is an array
e) can't say without seeing more code
Answer:
can't say without seeing more code
Explanation:
In the function calling, we pass the name of array, variable and direct value as well.
for example:
int y=3;
int x[] = {1,2,3,4};
fun(y,x);
so, we can't tell which is variable and which is array, without seeing the rest of code.
we can tell by seeing the initializing variable and function declaration or create function.
An expression tag contains a scripting language expression thatis evaluated.TrueFalse
Answer: True
Explanation:
Yes, an expression tag contains a scripting language expression that is evaluated. As, expression tag is used to display the output of the data in the generated page. If data is placed in expression tag then, it prints on the output stream and then it automatically convert data into the string and the output are displayed.
The general case in a recursive function is the case for which the solution is obtained directly.
True
False
Answer: False.
Explanation:
The general case of recursive function is when the solution is obtained recursively by simplification at each step.
However, it is the base case in a recursive function when the solution is obtained directly.
The general case must be reducible to base to arrive at a solution else the recursion would be a infinite recursion.
What is the output frequency for a counter circuit that contains 12 flip-flops with an input clock frequency of 20.48 MHz?
Answer:
5KHz
Explanation:
The formula for calculating the output frequency when the input frequency and the number of flip-flops are given.
[tex]out put Frequency = \frac{in put frequency}{2^{N}}[/tex]
here, N is the number of filp-flops.
Note: The input frequency must be in Hz.
first convert given input frequency (MHz) into HZ.
[tex]in put frequency = 20.48 *10^{6}Hz[/tex]
apply the formula:
[tex]out put Frequency = \frac{20.48*10^{6}}{2^{12}}[/tex]
which comes out to be 5000Hz or 5KHz.
The condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon
True False
Answer:
False
Explanation:
while loop is used to execute the statement again and again until the condition is TRUE.
Syntax:
initialization;
while(condition)
{
statement;
}
we write condition within the parentheses but without terminate with the semicolon.
Therefore., the answer is False
A digital computer has a memory unit with 24 bits per word. The instruction set consists of 150 different operations. All instructions have an operation code part (opcode) and an address part (allowing for only one address). Each instruction is stored in one word of memory. How many bits are needed for the opcode?
Answer:
8 bit
Explanation:
we have given that the instruction consist 150 different operation
we know that [tex]2^{8}[/tex] = 256
but we have only 150 operation
so now we check [tex]2^{7}[/tex]=128
which is less than 150 so we need 8 bit for the opcode
so the 8 bit are needed for the opcode because when we take 7 bit then [tex]2^{7}[/tex]=128 which is less than 150 and not useful so we need 8 bit
What operator is used to create a validation rule? A. – B. / C. < or > D. +
Answer:
A
Explanation:BECAUSE
Relational operators, specifically < and >, are used to create validation rules that data must satisfy when being entered or modified. They set conditions such as requiring a quantity to be at least one, as in >=1.
The operator used to create a validation rule is C. < or > which are relational operators. These operators are essential in forming expressions that set the conditions data must meet to be considered valid. For instance, a typical validation rule in an Order Entry form might be that the quantity entered must be equal to or greater than one. In this case, the rule would be represented as >=1.
In database systems and programming, the proper use of relational operators, such as <, >, <=, and >=, is critical for ensuring accurate querying and data integrity. These operators allow for comparison between values, ensuring that the entered data fits within the specified parameters defined by the validation rules.
What is the difference between a sequential access tile and a random access file?
Answer: Sequential access file enables the computer system to read or write file in sequential manner whereas random access file enables to read or write randomly in a data file.
Explanation:
Sequential file access is faster than random file access, however random access uses index searches. In random access higher number of seek operations are involved whereas in sequential access the number of seek operation is less.
What is the minimum valid subscript value for array a?
#define MAX 50
int a[MAX], i, j, temp;
A. 0
B. 1
C. Any negative number
D. There is no minimum
E. None of the above
Answer:
The answer to this question is A. 0.
Explanation:
In this segment of code #define MAX 50 is used.It is a pre-processor directive and in pre processor directive it is a MACRO means whenever the compiler encounters the word MAX in the execution it replaces MAX with 50.
So the size of the array becomes 50 and the indexing starts from 0 and upto 49.
The following JavaScript program is supposed to print: 1 by 4 by 9
on a single line by itself. Unfortunately the program contains at least eight mistakes. Write the corrected line beside the line in error.
var N; // Text
N := 1;
document.writeln( N );
document.writeln( “ by “);
document.writeln( “N + 3”);
document.writeln( “ by “ );
document.writeln( N + 5);
Answer:
var N; // Text
N = 1;
document.write( N );
document.write(" by ");
document.write(N + 3);
document.write(" by ");
document.write(N + 8);
Explanation:
var N; // Text
N = 1;
document.write( N );
document.write(" by ");
document.write(N + 3);
document.write(" by ");
document.write(N + 8);
Imagine you want to clean up your database and decide to delete all records from the Review table that have an Id of 100 or less. What does your SQL statement look like?
Answer: The query to delete rows for the given scenario is
DELETE
FROM Review
WHERE Id < 100 OR Id = 100;
Explanation:
In SQL, the table can be removed using either DROP, TRUNCATE or DELETE commands.
DROP command is used to delete the whole structure of the table. The general syntax is given below.
DROP TABLE table_name;
After this command, the whole structure of the specified table will be deleted. This table will have to be created again in order to use it and put data in this table.
SELECT *
FROM table_name;
This command when executed after the DROP command, will show an error.
This command can be used to drop database objects like constraints, index and the others.
The TRUNCATE command removes all the rows from a table. The structure of the table remains intact and data can be put again in this table.
This command only removes the data currently present in the table.
The general syntax is given below.
TRUNCATE TABLE table_name;
The command below will compile but it will not return any rows.
SELECT *
FROM table_name;
Alternatively, DELETE keyword is used to drop only the rows from a given table.
The general syntax for deleting rows from a table is given below.
DELETE
FROM table_name
WHERE [condition];
The WHERE clause is optional in a DELETE query.
SELECT *
FROM table_name;
The above command will compile and return rows if rows are present in the table other than the deleted rows.
The table used in the given query is Review table. We assume that Id is the primary key for the Review table. The query becomes
DELETE
FROM Review;
The condition for this deletion is that Id should be less than or equal to 100. The final query is written as
DELETE
FROM Review
WHERE Id < 100 OR Id = 100;
__________ involves determining what qualities are to beused to perform project activities.
Resource planning
Cost estimating
Cost budgeting
Cost control
Answer:
Cost Budgeting
Explanation:
Great question, it is always good to ask away and get rid of any doubts that you may be having.
The answer to this question is Cost Budgeting the keyword in the sentence that verifies this is "qualities". Cost Budgeting is the process of determining were to spend less money or more money, based on importance. In other words determining the which quality of product is better for the overall project activity.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
_____ means retrieve the element at the top of a stackwithout removing it.
a. Peek
b. Top
c. Push
d. Pop
e. none of the above
Answer:
A - Peek
Explanation:
The peek method retrieves the element at the top of a stack without deleting/removing it, the only exception that can occur is when the stack used is empty. It would look as follows when you use the method >> STACK.peek().
When a user process is running and an instruction is executed that requests a file-open operation, which of the following event will occur? (A) Supervisor call (B) Trap (C) I/O interrupt (D) Fault (E) None of the above
Answer:e
Explanation:
Because it will automatically work
What would display if the following pseudocode was coded and executed? Declare String user = "Martha and George" Declare Integer number Set number = length(user) Display number
Answer:
17
Explanation:
length() is the function which is used to find the number of character the string.
character include space as well.
initially declare the string user with input "Martha and George".
then call length function which count the character within the double quotes""
total number is 17 (15 letters and 2 spaces).
and it then store in the integer.
finally print the value.
Therefore, the output is 17.
Draw directed graphs representing relations of the following types.
(a) Reflexive, transitive, and antisymmetric.
(b) Reflexive, transitive, and neither symmetric nor antisymmetric.
Answer:
The first graph in the picture describes a relation that is (a) Reflexive, transitive, and anti-symmetric.
Because a, b, c, d all are related to itself, so reflexive.
where (a, b) and (b, d) are in the relation, (a,d) is in the relation,
for (c,a) and (a,b) there is (c,b).
so it's transitive.
for all a,b in the relation, (a,b) there is no (b,a) with a ≠b.
The second graph in the picture describes a relation that is (b) Reflexive, transitive, and neither symmetric nor anti-symmetric.
Because a, b, c, d all are related to itself, so reflexive.
where (a, b) and (b, a) are in the relation, (a,a) is in the relation,
where (c, d) and (d, d) are in the relation, (c,d) is in the relation,
so it's transitive.
Because, (a,b) and (b.a) are there, but for (c,d) there is no (d,c) in relation.
So, the relation is not symmetric.
(a,b) and (b,a) is in relation but, a≠b, so not anti symmetric.
Explanation:
For all a in a set, if (a,a) in a relation then the relation is reflexive.
For all (a,b) in relation R, if (b,a) is also in R, then R is symmetric.
For all (a,b), (b,c) in relation R, if (a,c) is also in R, then R is transitive.
For all (a,b), (b,a) in R, a = b, then R is an anti- symmetric relation.
What will be the value of input_value if the value 5 is input at run time?
cin >> input_value;
if (input_value > 5)
input_value = input_value + 5;
else if (input_value > 2)
input_value = input_value + 10;
else
input_value = input_value + 15;
Answer:
15
Explanation:
The if else state is used for checking the condition and if the condition is TRUE and program can execute the statement within the if else.
Initially input_value is 5
then the if statement check the condition 5>5, condition FALSE because 5==5
it not less than 5.
then program move to else if and check condition 5>2, condition TRUE.
then, input_value = 5 + 10=15 execute and update the value to 15.
After that, program terminate the if else statement.
Therefore, the answer is 15.