You are given an array of integers. Your task is to create pairs of them, such that every created pair has the same sum. This sum is not specified, but the number of created pairs should be the maximum possible. Each array element may belong to one pair only.

Write a function

class Solution public int
solution (int[] A); }

that, given an array A consisting of N integers, returns the maximum possible number of pairs with the same sum.

Examples:
1. Given A = [1, 9, 8, 100, 2], the function should return 2. The pairs are (A[0]. A[1]) and (A[2], A[4]); the sum of each pair is 10.
2. Given A = [2, 2, 2, 3], the function should return 1. Although, for instance, A[0]+A[1] = A[0]+A[2], the pairs (A[0], A[1]) and (A[0], A[2]) cannot exist at the same time, because they both contain a common element, A[0].

Answers

Answer 1
Complete PYTHON code with explanation:

def solution(nums):

# form a dictionary which will store

# the possible pair's sum as key and the indexs used for the sum

sumAndpair = {}

# for every element in list nums

for i in range(len(nums)):

# iterate on all the element to the right of current element

for j in range(i+1,len(nums)):

# calculate the sum of current 2 elements

sum = nums[i] + nums[j]

# if the sum is already in the dictionay

if sum in sumAndpair:

# check if the current index have already been used

# if yes, then continue to next iteration

# this will make sure that same number have not been used more than once

if i in sumAndpair[sum] or j in sumAndpair[sum]:

continue

# if no, then append the current i and j to the value of current sum

else:

sumAndpair[sum].append(i)

sumAndpair[sum].append(j)

# if the current sum is not in the dictionary

# add the sum as key with a list of index used

else:

sumAndpair[sum] = [i, j]

# copmpute the maximum possible number of pairs with the same sum

# which will be the maximum length value out of all the possible sum

# this maximum length will be divided by 2, since a pair of i, j contrinute to one sum

maxLength = 0

for key, value in sumAndpair.items():

if maxLength

Related Questions

Read two numbers from user input. Then, print the sum of those numbers.
Hint -- Copy/paste the following code, then just type code where the question marks are to finish the code.
num1 = int(input())
num2 = ?
print(num1 + ?)

Answers

Answer:

First ? - int(input())

Second ? - num2

Explanation:

This works because we are just mimicing the first input in your first variable.

The second one is adding them together.

Don't remember to give me brainliest :)

In Python which is the correct method to load a module math?

Answers

Answer: The math module is a standard module in Python and is always available. To use mathematical functions under this module, you have to import the module using import math .

Explanation:

in which country was Abacus build
if ur smart don't searh​

Answers

Answer:

Abacus many be built first in China

Explanation:

I know Abacus ^o^

Answer:

Hewo There!!!!

__________________

China- i thinkkk maybe?

__________________

“Hold fast to dreams,

For if dreams die

Life is a broken-winged bird,

That cannot fly.”

― Langston Hughes

__________________

Think of life as a mytery because well it sort of is! You don't know what may happen may be good or bad but be a little curious and get ready for whatever comes your way!! ~Ashlynn

_____ are extremely _____ data structure’s, used all the time, and there are so many _____ that can handle them to do useful things.
A _____ can be thought of as an array of arrays
•versatile
•functions
•arrays
•matrix

Answers

Answer:

arrays are extremely versatile  data structure’s, used all the time, and there are so many functions that can handle them to do useful things.

A matrix can be thought of as an array of arrays

Answer:

Arrays are extremely versatile data structure's, used all the time, and there are so many functions that can handle them to do useful things.

A matrix can be thought of as an array of arrays.

Happy Holidays

Explanation:

A company Digicom Parts manufactures 2 types of unique products for laptop and desktop computers. It manufactures 10 types of laptop products and 42 types of desktop products. Each product manufactured by the company has a unique productID from a-z and A-Z. The laptop product have productID (a, i, e, o, u, ALE, O, U) while the rest of the productIDs are assigned to the desktop products. The company manager wishes to find the sales data for the desktop products. Given a list of productIDs of the sales of the last N products, write an algorithm to help the manager find the productIDs of the desktop products.

Answers

Algorithms are used as a prototype of an actual program, during project design.

The algorithm the manager can use to find the productID of the desktop products is as follows:

Start

i = 0

if i > N, then Exit:

  Input productID:

       If productID.upper() == 'A' or 'I' or 'E' or 'O' or 'U':

                 Process data as desktop products

  i++

Go to step 2

Stop

Note that algorithms do not conform to programming syntax.

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BEBE
What options does the Table Tools Layout contextual tab contain? Select three options.
O modify text direction
change font
insert rows and columns
O add border and shading
O split table

Answers

Answer:

Modify text direction.change font, and insert row and coulumns

Explanation:

Answer:

What options does the Table Tools Layout contextual tab contain? Select three options.

modify text direction

insert rows and columns

split table

Explanation:

write down the application areas of an ICT?​

Answers

Answer:

These are internet, telephone, mobile phone, TV, radio and office automation systems such as word-processing, fax, audio conferencing, video conferencing, computer conferencing, multimedia, etc, through the use of networks of satellite and fiber optics..

Explanation:

hope its help

A hybrid data mart ________ data from a data warehouse as well as other data collection systems. It incorporates a top-down approach, end-user inputs, and enterprise-level integration. g

Answers

Answer:

Hybrid Data Marts

A hybrid data mart allows you to combine input from sources other than a data warehouse. This could be useful for many situations, especially when you need ad hoc integration, such as after a new group or product is added to the organization.

We can use a hybrid data mart to mix data from sources other than a data warehouse, and the further discussion can be defined as follows:

Hybrid Data Marts:

It could be useful in a variety of scenarios, particularly when informal integration is required, like when a new group or product is added to the organization.

We can use a hybrid data mart to combine data from various sources other than a data warehouse. It's a structure or access pattern that retrieves client-specific data in data warehouse environments. This data mart is a subset of a data warehouse that is typically focused on a particular business line or functional area.

Therefore, the final answer is "separates".

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Internet privacy refers to the level of information sharing on the web collected through web cookies, caches, and browsing history true or false

Answers

The level of information sharing on the web that are mainly collected through web cookies, caches, and browsing history of a web browser is referred to as Internet privacy: True.

A web browser can be defined as a software program that is typically designed and developed for viewing a HTML document or browsing the Internet.

An Internet privacy refers to the level of privacy protection an end user has while browsing the Internet, especially with reference to the vast range of protocols, technologies, and frameworks (concepts) that are deployed.

This ultimately implies that, Internet privacy relates to the level of information sharing on the web that are mainly collected on a web browser through the following means:

Web cookiesCachesBrowsing history

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Brainliest if correct. 3. You are researching ways to boost employee morale for a proposal. How can you
avoid copyright issues when you find materials from outside sources? (1 point)

Answers

To avoid copyright you can give credit to the original author. For example if I copy information that said “all humans are meant to be extinct by 2073” from notarealwebsite.com I shout credit them for this.

When do you think is the right time to use Styles,

Answers

Answer:

1. Democratic Management Style

2. Coaching Management Style

3. Affiliative Management Style

4. Pacesetting Management Style

5. Authoritative Management Style

6. Coercive Management Style

7. Laissez-Faire Management Style

8. Persuasive Management Style

Which of the following Access objects provides a user-friendly data entry method?
Select one:
a. query
b. table
c. form
d. report

Answers

Answer:

Table

Explanation:

Microsoft Access uses an object called a _____ to enter and organize data.

The answer is table.

Game Changer Technologies has four software teams. Each of them is developing four different examples of its new game app. Which software development methodology is used by the Game Changer teams

Answers

The software development methodology used by the Game Changer teams is called; Prototyping

We are given that;

- Game changer technologies has four software teams

- Each of the teams develops 4 different examples of the new game app.

Now, since each of them is developing four four different examples of its new game app, the method being used is called prototyping. This is because prototyping is referred to as the early approximation of the final system of a product whereby such a product is built, tested and rebuilt if required until an acceptable prototype is achieved.

When the acceptable prototype is gotten, then it will be used to develop its final game app.

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what is the full form of computer​

Answers

Answer:

Common Operating Machine Purposely Used for Technological and Educational Research

Explanation:

"A computer is a general-purpose electrical device that is used to do arithmetic and logical processes automatically," according to some.

Filtering is a function of _____.

Answers

The answer is: switches.

Explanation:

Filtering is a function of switches.

What type of databases is not limited by the data’s physical location?

Answers

A distributed database is not limited by the data's physical location.

What is property in educational technology

Answers

1. It is based on scientific and technological advancements.
2. It is more a practical discipline and less a theoretical one.
3. It is a fast growing modern discipline.
4. It makes use of the research findings of psychology, sociology, engineering, sciences and social psychology etc., and applies the same to the field of education.
5. It brings pupils, teachers and technical means together in an effective way.
6. It is the science of techniques and methods. It locates the problems in the field of education, remedies them and ultimately aims at improving the education system.
7. It is bound to improve the teacher, the learner and the teaching learning process.

Which of the following is an example of power redundancy?
UPS
Backup server
RAID
Fault tolerance

Answers

The correct answer is UPS

What does it mean "Be Proactive"?

Answers

Answer:controlling a situation by making things happen or by preparing for possible future problems

Explanation:

Make things happen instead of waiting for them

smart art is considered a​

Answers

Explanation:

visual representation of information and ideas, and a chart is a visual illustration of numeric values or data. Basically, SmartArt graphics are designed for text and charts are designed for numbers. Use the information below to decide when to use a SmartArt graphic and when to use a chart.

The program allows the user to type in any linux command and then executes that command, such as "pwd" or "echo". The problem is that it should allow multiple commands to be typed in and executed at the same time, but it only allows one at a time currently. Please help fix it so it allows multiple commands to be typed and executed.
Code:
#include
#include
#include
#include
#include
#include
void parse(char *line, char **argv)
{
while (*line != '\0') { /* if not the end of line ....... */
while (*line == ' ' || *line == '\t' || *line == '\n')
*line++ = '\0'; /* replace white spaces with 0 */
*argv++ = line; /* save the argument position */
while (*line != '\0' && *line != ' ' &&
*line != '\t' && *line != '\n')
line++; /* skip the argument until ... */
}
*argv = '\0'; /* mark the end of argument list */
}
void execute(char **argv)
{
pid_t pid;
int status;
if ((pid = fork()) < 0) { /* fork a child process */
printf("*** ERROR: forking child process failed\n");
exit(1);
}
else if (pid == 0) { /* for the child process: */
if (execvp(*argv, argv) < 0) { /* execute the command */
printf("*** ERROR: exec failed\n");
exit(1);
}
}
else { /* for the parent: */
while (wait(&status) != pid) /* wait for completion */
;
}
}
void main(void)
{
char line[1024]; /* the input line */
char *argv[64]; /* the command line argument */
while (1) { /* repeat until done .... */
printf("Enter Shell Command -> "); /* display a prompt */
fgets(line, 1024, stdin); /* read in the command line */
printf("\n");
parse(line, argv); /* parse the line */
if (strcmp(argv[0], "exit") == 0) /* is it an "exit"? */
exit(0); /* exit if it is */
execute(argv); /* otherwise, execute the command */
}
}
This function receives a commend line argument list with the */ /* the first argument being cd and the next argument being the */ /* directory to change.

Answers

Where is the question

Match the vocabulary to the appropriate definition.
•Organizes data to allow it to be easily retrieved
and read
•Extremely versatile data structures
•Pulling related code together in objects
•Helps programmers when they revisit code or
are new to the code
•Storing code in a centralized servers
*Arrays
*Data Structures
*Hierarchies
*Repository
*Documentation

Answers

Answer:

Pulling related code together in objects is Arrays

Helps programmers when they revisit code or are new to code-- Documentation

Explanation:

This is all I know

Good documentation Helps programmers when they revisit code or are new to the code.

What is good documentation?

Good Documentation is known to be the guidelines that helps one or allows one to follows the steps for  recording raw data entries in a legible, right and reproducible way.

Note that Good documentation Helps programmers when they revisit code or are new to the code.

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Buddys machine shop has a kiosk computer located in the lobby for customers to use. The kiosk computer has recently been updated to Windows 10 from Windows 7 and is not part of a domain. The local computer policy created for Windows 7 has been applied to Windows 10. This policy severely restricts the use of the computer, so that customers can only use the web browser.
Occasionally, an administrator needs to sign in to the kiosk computer to perform maintenance and update software. However, this is awkward because the administrator needs to disable settings in local policy be performing any task. Then, when the tasks are complete, the administrator needs to re-enable the settings in the local policy. Explain how this system can be improved upon.

Answers

If your PC's are in an Active Directory domain, you can leverage Active Directory Group Policies to deploy the appropriate settings. Be sure to include the below settings in your Group Policy for the user accounts and workstations that will be running as a Kiosk. After creating this Group Policy, you can test by running gpupdate /force and then restarting the PC.

User Configuration
Administrative Templates
Start Menu and Taskbar
Change Start Menu power button (enabled) - set to "Lock" (I know this sounds weird, but Windows 7 won't completely disable Logoff if the Start Menu power button is defaulting to the Logoff action).
Remove Logoff on the Start Menu (enabled)
Remove and prevent access to the Shut Down, Restart, Sleep and Hibernate commands (enabled)
System
Ctrl+Alt+Del Options
Remove Lock Computer (enabled)
Remove Logoff (enabled)
Computer Configuration
Administrative Templates
System
Logon
Hide entry points for Fast User Switching (enabled)
For Windows PCs not in a Domain Environment

If your PC's are not in an Active Directory domain, then you'll need to make the below changes manually at each Kiosk PC. Note that you may be able to automate the changes via the use of operating system imaging tools and local mandatory user profiles - leave a comment below if you have interest in those steps.

Login at each Kiosk PC using a user account that will ultimately be used to run the Kiosk desktop applications.
Launch the Windows Registry Editor (REGEDIT.EXE) and make the following changes to the registry (note that you may need to temporarily grant local Administrative access to your Kiosk user account to do this if it is already in a very locked down state)
HKEY_CURRENT_USER
SOFTWARE
Microsoft
Windows
CurrentVersion
Policies
Explorer

Add comma(s) where needed, if needed.


My birthday October 31 2005 is on Halloween.


My birthday October 31 2005 is on Halloween. (no change)


My birthday October 31, 2005, is on Halloween.


My birthday October 31, 2005 is on Halloween.


My birthday, October 31, 2005, is on Halloween.

Answers

Answer:

My birthday, October 31, 2005, is on Halloween.

Explanation:

The correct option with commas is "My birthday, October 31, 2005, is on Halloween."

Why is this correct?

The revised sentence "My birthday, October 31, 2005, is on Halloween." correctly uses commas to separate the date from the year and to set off the date as an appositive.

This improves clarity and follows proper punctuation rules.

Hence,. The correct option with commas is "My birthday, October 31, 2005, is on Halloween."

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What unit on a digital camera gives added illusions

Answers

Vfx used for visual effects in the creation on any screen.. imagery that does not physically exist in life. Vfx also allow makers of films to create environments, objects, creature,ect..

displaying advertisements specific or users internet based on their buy preference is called ._________.​

Answers

Targeted advertising       hope it helps

RAM or RIM is correct?

Answers

RAM is the correct answer

I wake up the computer and remind it what to do ​

Answers

Answer:

what's the question or answer you want or is it a joke?

Explanation:

You enter a hardware store where you have an account, pick up a pair of $5.00 pliers, and wave them at the manager as you leave the store. This would be an example of a(n):

Answers

Shoplifting! Did he pay for those?!?!

The given situation is an example of shoplifting.

What is hardware?

All the mechanical components made of simply plastic or metal used in houses or industries are termed as hardware.

You enter a hardware store where you have an account, pick up a pair of $5.00 pliers, and wave them at the manager as you leave the store.

This gives an idea of the shoplifting, as he hold the account with them. He doesn't need to pay every time he buys anything.

This, this would be an example of shoplifting.

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in excel If you have a lengthy text, adding a __________ can change the cell’s format to ________. *

Answers

Based on Microsoft Excel analysis, in excel If you have a lengthy text, adding a Wrap Text can change the cell’s format to high height.

What is Microsoft Excel?

Microsoft Excel is one of the software applications in Microsoft Office. It has cells of rows and columns in which users can easily put facts and figures to carry out tasks.

The function of Wrap Text

Wrap Text is applied in Microsoft Excel to show the cell contents on many lines instead of a single long line.

Hence, in this case, it is concluded that the correct answer is "Wrap Text and High Height."

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