Answer:
60
Explanation:
According to the operator precedence, the bracket comes in the top. So, the program solve expression in the bracket first.
In the code, the value of Y is 12 and z is 3
substitute the value in the formula.
X = (12*(3 + 12 - 10)).
So, the program calculate the value (3 + 12 - 10) first which gives 5.
After that program evaluate (12 * 5) which gives 60.
Therefore, the answer is 60.
In java, Write a while loop that prints userNum divided by 2 (integer division) until reaching 1. Follow each number by a space. Example output for userNum = 20:
Answer:
while(userNum > 1){
userNum = userNum /2;
System.out.print(userNum+" ");
}
Explanation:
Probably don't need the print statement, but it doesn't cause an error.
This solution uses a while loop in Java to repeatedly divide a number by 2 and print the result until the number is less than 1. The example code and explanation illustrate the process clearly.
To solve this problem, you need to write a while loop in Java. This loop will continue dividing the given number by 2 until it reaches 1. Here's the step-by-step solution:
Example Code:
import java.util.Scanner;In this code:
We initialize userNum with a value (20 in this example).The while loop continues as long as userNum is greater than or equal to 1.In each iteration, we print userNum followed by a space and then divide it by 2 using integer division.The output for userNum = 20 will be: 20 10 5 2 1 .
What are the different types of firewalls? Which one is best?
To speed up item insertion and deletion in a data set, use ____.
A.
arrays
B.
linked lists
C.
classes
To speed up item insertion and deletion in a data set, use B. linked lists.
Hope this helps!
Final answer:
To enhance the speed of insertion and deletion in a data set, linked lists are superior to arrays as they allow for quick updates of references without needing to shift elements. Thus, option B is correct.
Explanation:
To speed up item insertion and deletion in a data set, the best choice would be B. linked lists. Unlike arrays, which require shifting elements when inserting or deleting an item particularly if it's not at the end, linked lists can efficiently add or remove items because they only need to update the references (or pointers) to the neighboring elements.
When working with a sorted linked list, the structure will maintain items in a sorted order. When inserting a new item, it determines the correct location within the order to insert, based on comparison operators like <. In Python, this can be implemented using special methods such as __lt__() and __eq__(). This comparison flexibility allows for the linked list to handle various data types including integers, floats, and strings, facilitating the sorted order efficiently.
As it is a good practice that C# broughtback the concept of GOTO statement and Pointer? If your answer isyes then how C# control the worst effect of those features. Pleasebe brief?
Answer:
No for GOTO
Yes for Pointer
Explanation:
GOTO statement
This declaration is used to pass control to the program's marked declaration. The label is the valid identifier and is positioned just before the declaration from which the control is transmitted.
It becomes hard to trace a program's control flow, making it hard to comprehend the program logic. Any program in C language can be written without using a GOTO statement.
Pointers
A C # pointer is nothing but a variable holding another type of memory address. However, in C # pointer only the memory address of the value types and arrays can be declared.
C # supports pointers to a restricted extent. Unlike reference kinds, the default trash collection system does not track pointer kinds. Pointers are not allowed to point to a type of structure containing a type of reference or a type of reference.
During the garbage collection process, the C #garbage collector can move objects in memory as they wish. The C #offers a unique fixed keyword for telling Garbage Collector not to move an item. This implies that the place of the value kinds referred to is fixed in memory. This is called pinning in C #.
The GOTO statement and pointers in C# can simplify some coding tasks but can also make the code harder to read and C# controls these downsides by offering structured programming constructs and by restricting pointer usage to unsafe contexts.
The introduction of the GOTO statement and pointers in C# can be seen both positively and negatively. While the GOTO statement allows for easier navigation and breaking out of control structures, it often results in code that is hard to read and maintain. To mitigate such issues, C# provides structured programming constructs like loops, conditional statements, and methods to manage control flow more effectively.
C# also manages the risks of pointers by requiring explicit permissions and special contexts for their usage, thus limiting their misuse.
Control Mechanisms in C#
Instead of GOTO, use loops (for, while) and conditionals (if, switch) for better readability.Pointers are only allowed in unsafe contexts to highlight potential risks."What is the running time of HEAPSORT on an array A of length n thatis already sorted in increasing order?
Answer:
The answer to this question is O(NlogN).
Explanation:
The time complexity of Heap Sort on an array A is O(NLogN) even if the array is already sorted in increasing order.Since the Heap Sort is implemented by creating the heap from the array and then heapifying and then repeatedly swapping first and last element and deleting the last element.The process will be done for the whole array.So the running time complexity is O(NLogN).
Give at least 5 indicators which help to identify systems andtables as potential de-normalizationcandidates.
Answer and Explanation:
The five indicators are
There is existence of repeating groups which needs to be processed in a single group not individuallymany reports exist which need to be processed onlinetables need to processed in different way by different users at the same time certain columns need very large time for the de normalization take 60% as the alarming numbermany calculations needs to be applied to columns before queries can be answered
An ____ is an object that produces each element of a container, such as a linked list, one element at a time.
A.
initiator
B.
iterator
C.
interpreter
Answer:
B. iterator
Explanation:
An iterator is an object that produces each element of a container, such as a linked list, one element at a time.
An iterator is an object that produces each element of a container, such as a linked list, one element at a time. Thus, the correct option for this question is B.
What is an element?An element may be characterized as the constituent parts of a work of computer that is an essential characteristic of all works of programming and spoken narrative fiction. These elements include plot, theme, character, and tone.
According to the context of this question, an iterator is an object that significantly enables a programmer in order to transverse a container, particularly lists. The various types of iterators considerably provide numerous interfaces to the programmer in order to develop program.
Therefore, an iterator is an object that produces each element of a container, such as a linked list, one element at a time. Thus, the correct option for this question is B.
To learn more about Iterator, refer to the link:
https://brainly.com/question/29313296
#SPJ5
What will the following code display?
int number = 6
int x = 0;
x = --number;
cout << x << endl;
1. 7
2. 6
3. 5
4. 0
Answer:
5
Explanation:
The operator '--number', it is a pre decrement operator which decrement first and then assign. It decrement the value by 1.
initially the number is 6.
x is 0.
then, x = --number;
it decrement the number by 1 first and then assign to x.
so, x assign the value 5.
finally, print the value.
Therefore, the answer is 5.
Incomplete Configuration identification documents may resultin:
a) Defective Product
b) Higher Maintenance Costs
c) Schedule Product
d) Meet Software Quality
e) A,B,C
f) B,C,D
Answer: e) A,B,C
Explanation:
Incomplete configuration identification documents may result in defective product, higher maintenance costs and schedule product as, inaccurate document decreased the quality of the product and cause damage. If the configuration documentation are not properly identified, then it is impossible to control the changes in the configuration items, to established accurate reports and records or validate the configuration.
Which of these are valid declarations for the main method?
?? public void main();
?? public static void main(String args[]);
?? static public void main(String);
?? public static int main(String args[]);
Answer:
The answer is option 2. public static void main(String args[]);
Explanation:
The answer is public static void main(String args[]); let's understand this line:-
public:-It is an access specifier that means whichever entity is public it will be accessible everywhere.static:-It means that there is only one copy of the method.void:-Void means that the method does not have any returning any value.main:-It is the name of the method.String args[]:-It is an array of strings which and it stores java command line arguments.User can use another name if the user want to.Given the IP address and subnet mask 192.168.10.0 and255.255.255.224
a) What is the maximum number of subnets in the network?
b) What is the number of hosts?
c) What are the valid subnets?
It is requested pls.give details how u have calculated?
Answer:
a) Maximum subnets=8
b) if there is no subnet , no. of hosts will be 32-2 = 30. If there are 8 subnets as above, then no. of hosts will b 4-2=2.
c) Valid subnets are 6
192.168.10.32
192.168.10.64
192.168.10.96
192.168.10.128
192.168.10.160
192.168.10.192
Explanation:
a) Maximum number of sub nets in the network
For number of sub nets in a network , which class this ip address belongs to
IP address 192.168.10.0
subnet mask 255.255.255.224
192 in ip address means it is a class C address.
In class C address -
Network address-24 bits
Host address-8bits
For number of subnets we check last block of subnet mask.
224 -covert this into binary
11100000
From binary form ,we can conclude that 3 bits are used for sub network as only 3 are 1.
=2^n
= 2^3 =8
b) Number of hosts
In a network,
Number of hosts is (2^host no -2)
We have subtracted 2 because out of these hosts two are used in broadcasting and other purposes.
Host number is equal to the 0's in the Subnet mask
255.255.255.224
convert this into binary number i.e
11111111.11111111.11111111.11100000
So,5 0's are there
Number of valid hosts= 2^5 -2
= 32-2
= 30
c) The Valid subnets are
For valid we have to perform Logical AND with IP Address and subnet mask.
IP address 192.168.10.0
subnet mask 255.255.255.224
Convert these in binary -
IP address 11000000.10101000.00001010.00000000
Subnet mask 11111111.11111111.11111111.11100000
after performing And operation- 11000000.10101000.00001010.00000000
192.168.10.0
this is the host address
192.168.10.224 this is the broadcast address
These are the valid sub nets
192.168.10.32
192.168.10.64
192.168.10.96
192.168.10.128
192.168.10.160
192.168.10.192
.The process of capturing the requirements includes all ofthe following with the exception of:
A.verification B.elicitation C.analysis D.validation
Answer: A) Verification
Explanation: Capturing of the requirements is the process of which the project is taken up to test the scope that project. The capturing of requirement process is divided into certain parts to conduct the procedure as
ElicitationAnalysisValidationSpecificationTherefore there is no part of verification in the process so capturing of requirements process has a exception of verification.
Give a recursive (or non-recursive) algorithm to compute the product of two positive integers, m and n, using only addition and subtraction ?
Answer:
Multiply(m,n)
1. Initialize product=0.
2. for i=1 to n
3. product = product +m.
4. Output product.
Explanation:
Here we take the variable "product" to store the result m×n. And in this algorithm we find m×n by adding m, n times.
In a circular linked list the last node points to the____ node.
a. first
b. last
c. middle
d. new
Answer: option A) First
In a circular linked list the last node points to the first node.
Explanation: As in a circular linked list, the node will point to its next node. Since the node next to last node is the first node hence last node will point to first node in a circular way. The elements points to each other in a circular path which forms a circular chain.
Define a graph. Draw a directed and undirected graph with 8 vertices and explain all the terminologies associated with that graph Note: Terminologies are cycles, path, directed and undirected graph, circuit, loop, adjacency, degrees, Euler circuit, Hamiltonian circuit
Answer:
A graph is a collection of set of edges E and vertices V, where each edge joins pair of vertices.
A graph is undirected when the edges has no direction.
A graph is directed when the edges has confined direction.
An edge is directed if it is defined to come out from one vertex and goes to another fixed vertex.
A loop is an edge from a vertex to itself.
A path from a vertex x to another vertex y is a sequence of distinct edges that joins sequence of distinct vertices:
(x,[tex]x_{1}[/tex])→([tex]x_{1}[/tex], [tex]x_{2}[/tex])→([tex]x_{2}[/tex], [tex]x_{i}[/tex])→ .... → ([tex]x_{j}[/tex],y)
A cycle is path that starts and ends at same vertex.
A circuit is a path that starts and ends at same vertex, but not necessarily contain distinct vertices.
An Euler circuit is circuit that traverse each edge of the graph exactly once and covers all vertices.
An Hamiltonian circuit is a simple circuit that traverse each vertex of the graph exactly once and covers all edges.
Degree of a vertex is the number of edges incident on it.
In case of undirected graph the number of edges incident on the vertex is it's degree.but in case of directed graph the number of edges coming out of the vertex is it's out-degree and the number of edges going to the vertex is it's in-degree.Explanation:
The expressionvecCont.empty() empties the vector container of allelements.
a. True
b. False
Answer:
False
Explanation:
vector is like a dynamic array that has a special ability to resize automatically when it required.
vector has several functions:
like, insert() to insert the element in the vector.
delete() for delete the one element at a time.
empty() is also the function used in the vector. It is used for checking the vector is empty or not.
it gives the Boolean value (TRUE or FALSE), if the vector is empty it gives the output TRUE if the vector is not empty it gives the output FALSE.
It is not used for empty or deletes all elements of the vector.
Therefore, the answer is False.
write an algorithm that gets the price for item A plus the quantity purchased. The algorithm prints the total cost, including a 6% sales tax.
Answer:
Algorithm()
1. p = Enter the price of item A.
2. c = Enter the number of A’s purchased.
3. Now the price per item with tax is:
t= p+(p*6/100)
4. The total cost of c items:
ct= t * c.
5. Print ct.
In this algorithm, we are taking the price per item and counting it’s cost including tax. Then we are multiplying the price per item with tax with the number of items we purchase, to find the overall cost with tax.
You may calculate the overall cost without tax as (p*c). Then you can find the overall cost with tax as ((p*c)+(p*c*6/100)), as in both way, we will get the same result.
Final answer:
To calculate the total cost of an item including a 6% sales tax, multiply the price of item A by the quantity purchased to get the total price before tax. Then calculate the sales tax by multiplying the total price by 0.06 and add this to the total price to get the total cost.
Explanation:
To write an algorithm that calculates the total cost of an item including sales tax, you need to first find the price of the item A and the quantity purchased. Then, to calculate the sales tax, you will convert the percent to a decimal and multiply it by the total price (price multiplied by quantity). Lastly, you will add this sales tax to the total price to get the total cost.
Algorithm:
Get the price of item A.Get the quantity of item A purchased.Calculate total price without tax: total_price = price_of_item_A * quantity_purchased.Calculate sales tax: sales_tax = total_price * 0.06.Calculate total cost including sales tax: total_cost = total_price + sales_tax.Print the total_cost.For example, if the price of item A is $50 and the quantity purchased is 2, then the total cost before tax is $100. The sales tax at 6% would be $6. Therefore, the total cost including sales tax would be $106.
how the email system work??(
Answer:
Email is the electronic mail, basically it is in form of computer-based communication that consists of messages, which are sent and received using the Internet.
Email system works as:
The sender composed a message on their computer using the email client.When the user send the message, the email text and attachment are uploaded in Simple Mail Transfer Protocol(SMTP) server as the outgoing mail. All the messages wait in the outgoing email, while the SMTP server communicate with the Domain Name Server. If the SMTP server search the recipient’s email server, then it will transfer the attachments and the messages . When the next time recipient clicks on send and receive, then the client email download new message from their email server and then you got the mail.Methods used with object instantiations are called ____ methods.
a.
accessor
b.
instance
c.
internal
d.
static
Answer:
b. instance
Explanation:
Methods used with object instantiations are the instance methods. When a class is instantiated we get a reference to the object. Invoking a method on the object , executes the corresponding instance method.
For example:
String s = new String("test");
int len = s.length();
Here length() is an instance method of String object s.
with open source operating systems,both the executable code and source code are available:
true or false?
Answer:v True
Explanation: Open source operating system is the system that has source code that can be modified and enhance them . It can also be shared between the public as it is available in the open form . There are many examples of the open source operating system like Linux, Ubuntu etc. which has both executable code and source code as well. so therefore the given statement is true.
Where does the data go for the following instructions?
LDX #$2000
STAA $60,X
Answer: LDX copies the instruction pointed by the memory location into the accumulator. STAA stores the content of the accumulator in the memory location $
Explanation:
Here in LDA #$2000, copies the instruction pointed by the memory location $2000 into the Accumulator A, and it uses indirect addressing.
STA $60,X stores the content of A into the memory location assigned by $60 and assigns it to X.
How is ( a || b ) && c || ( a || b ) && ( ! c ) equal to ( a || b ) without simplification?
Answer: You can see the truth table in the image.
Explanation:We can do this question by using truth table.
As we can see in the truth table that there is no effect on the output of the expression by c if a and b both are false then the output is false and if any of them is True or both of them are True then the result is True.
The methods of the Character class that begin with ____ return a character that has been converted to the stated format.
a.
in
b.
to
c.
is
d.
for
Answer:
most probably the answer is 'to'
what are the forms of Hornclause?
Answer:
Hornclause is defines as, it is a logical formula for particular rule which gives a useful parameters for a logical programming. Hornclause is a clause with one positive literals.
Different form of hornclause are:
Null clause: Null clause is that with 0 negative and 0 positive literals which appears at the end of a resolution proof. A fact or unit clause: Unit clause is defined as literals, which contain 1 positive literals and 0 negative literals. A negated goal: It is defined as negated goal is the negation of the statements to be proved with at least 1 negative and one positive literals.What happens when an exception is thrown, but the try statement does not have a catch clause that is capable of catching it?
Answer:
A checked exception indicates something beyond your control has gone wrong. ... If an exception does not have a matching catch clause, the current method terminates and throws the exception to the next higher level. If there is no matching catch clause at any higher level, then the program terminates with an error.
When mathematicians use a two-dimensional array, they often call it a ____.
a.
matrix
b.
grid
c.
net
d.
mesh
Answer:
matrix
Explanation:
The two dimensional array store the value similar to matrix.
Two dimensional array contain row and column similar to matrix.
For example:
int arr[3][3], it means 3 rows and 3 column
and [tex][A]_{3*3}=\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right][/tex]
and if we want to retrieve the data from array arr[1][2], it means first row and second column.
so, 2 dimensional array is basically a matrix.
Please explain external hashing, B-trees, and traversals. 3-5 sentences per
Answer: In external hashing the hash table is in disk where each slot of the page table holds multiple entries which refers to pages on the disk organised in the form of buckets.
B-trees are self balancing trees which contains sorted data and allows insertion, deletion, traversals
Traversal is the process of visiting the nodes of the tree data structure.
Explanation:
External hashing is different from internal hashing and it refers to concepts in database management systems. Internal hashing stores only single record maintained in page table format, whereas external hashing holds multiple entries.
B-trees are generalisation of binary trees where it can have more than 2 children.
Traversal of trees helps in insertion, deletion, modification of nodes in tree data structure
Write a program that gets a list of integers from input, and outputs the integers in ascending order (lowest to highest). The first integer indicates how many numbers are in the list. Assume that the list will always contain less than 20 integers. Ex: If the input is:
Answer:
integers=[]
while True:
number=int(input())
if number<0:
break
integers.append(number)
print("",min(integers))
print("",max(integers))
Explanation:
Why do cellular telephone systems only need seven sets of frequencies in metropolitan areas?
Answer: For frequency reuse, telephone systems use 7 sets of frequencies in metropolitan areas.
Explanation:
As the population is high in metropolitan cities it requires faster reuse of frequencies so that everyone within the network region is being able to use their cellular devices. It can be imagined in the form of a hexagon with 6 points and one at the center enabling faster reuse of free frequencies.
Why Java Script uses the prefix Java in itsname?
Answer:
Java in JavaScript does not correspond to any relationship with Java programming language.
Explanation:
The prefix Java in Javascript is there for historical reasons.
The original internal name of Javascript when it was created by Brendan Eich at Netscape was Mocha. This was released to public as Livescript in 1995. The name Livescript was eventually changed to Javascript in Netscape Navigator 2.0 beta 3 release in December 1995 after Netscape entered into an agreement with Sun Microsystem. The primary purpose of change of name seemed to be as a marketing aid to benefit from the growing popularity of Java programming language at that time.