/*
Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'.
A region is captured by flipping all 'O's into 'X's in that surrounded region .
For example,
X X X X
X O O X
X X O X
X O X X
After running your function, the board should be:
X X X X
X X X X
X X X X
X O X X
*/
public class Solution {
// This algorithm cannot solve the large test set
public void solve(char[][] board) {
// Start typing your Java solution below
// DO NOT write main() function
int rows = board.length;
if(rows == 0) return;
int cols = board[0].length;
for(int i = 0; i < cols; i++) {
// check first row's O
if(board[0][i] == 'O') {
// change it to other symbol
board[0][i] = '#';
dfs(board, 0, i);
}
// check the last row
if(board[rows - 1][i] == 'O') {
board[rows - 1][i] = '#';
dfs(board, rows - 1, i);
}
}
for(int i = 0; i < rows; i++) {
// check first col
if(board[i][0] == 'O') {
board[i][0] = '#';
dfs(board, i, 0);
}
// check last col
if(board[i][cols - 1] == 'O') {
board[i][cols - 1] = '#';
dfs(board, i, cols - 1);
}
}
// change O to X
changeTo(board, 'O', 'X');
// change # to O
changeTo(board, '#', 'O');
return;
}
public void dfs(char[][] board, int row, int col) {
// check up
if(row > 0) {
if(board[row - 1][col] == 'O') {
board[row - 1][col] = '#';
dfs(board, row - 1, col);
}
}
// check left
if(col > 0) {
if(board[row][col - 1] == 'O') {
board[row][col - 1] = '#';
dfs(board, row, col - 1);
}
}
// check right
if(row < board.length - 1) {
if(board[row + 1][col] == 'O') {
board[row+1][col] = '#';
dfs(board, row+1, col);
}
}
// check down
if(col < board[0].length - 1) {
if(board[row][col+1] == 'O'){
board[row][col+1] = '#';
dfs(board, row, col+1);
}
}
return;
}
public void changeTo(char[][] board, char from, char to) {
for(int i = 0; i < board.length; i++) {
for(int j = 0; j < board[0].length; j++) {
if(board[i][j] == from) {
board[i][j] = to;
}
}
}
return;
}
}

Explanation:

Concurrency Control in Database Management System is a procedure of managing simultaneous operations without conflicting with each other. It ensures that Database transactions are performed concurrently and accurately to produce correct results without violating data integrity of the respective Database.And The ACID properties, in totality, provide a mechanism to ensure correctness and consistency of a database in a way such that each transaction is a group of operations that acts a single unit, produces consistent results, acts in isolation from other operations and updates that it makes are durably stored.

Answer:

Hence the answer is given as follows,

Explanation:

Base Case:-  

If (num == 0) //This is the base case for the given recursive method  

return 1;  

If(num % 2!=0) checks whether num is odd.  

The above condition is true for all odd numbers and false for even numbers.  

if the remainder is not equal to zero when we divide the number with 2 then it is odd.  

The method:-  

The above recursive method calculates the product of odd numbers up to the given range(that is num)  

For num=5   => 15(5*3*1).  

For num=7   => 105(7*5*3*1).  

For num=10 => 945(9*7*5*3*1).

Answer:

1) 10cos ( 2πfct + 10sin 2πfmt )

2) 50 watts

3) 1000 Hz

Explanation:

m(t) = 10cos(1000πt)

c(t) = 10cos(2πfct )

modulation index (  = 10

1) expression for modulated signal ( u(t) )

u(t) = Ac(cos 2πfct ) + A (cos 2πfct m(t) ) Am cos2πf mt

      = 10cos 2πfct + 100 cos 2πfct  cos2π500t

      = 10cos ( 2πfct + 10sin 2πfmt )

2) power of modulated signal

power of modulated signal  μ^2 / 2 ]

           = 10^2/2 ]

           = 50 watts

3) Bandwidth

B = 2fm  = 2 * 500 = 1000 Hz

Answer:

Unification may be a process by which two logical individual atomic expressions, identical by replacing with a correct substitution. within the unification process, two literals are taken as input and made identical using the substitution process. There are some rules of substitution that has got to be kept in mind:

The predicate symbol must be an equivalent for substitution to require place.

The number of arguments that are present in both expressions must be equivalent.

Two similar variables can't be present within the same expression

Explanation:

a. American (Bob), American (y):-

In this scenario, Unification is feasible consistent with the principle. The substitution list is going to be [y/Bob].

b. Enemy (Nono, America), Enemy(x,y):-

In this scenario, the Unification is feasible consistent with the principles. The substitution list is going to be [x/Nono, y/America].

c. Weapon (Missile), soldTo (Missile, y), Weapon (x), soldTo (x, Nono):-

In this scenario, the Unification isn't possible because the predicate is different i.e. Weapon and soldTo.

d. L(x, y), (L(y, x) ^ L(A, B)):-

In this scenario, Unification isn't possible because the number of arguments is different within the given expression

(c) 4

The function strpos() is a function in php that returns the position of the first occurrence of a particular substring in a string. Positions are counted from 0. The function receives two arguments. The first argument is the string from which the occurrence is to be checked. The second argument is the substring to be checked.

In this case, the string is "Get Well Soon!" while the substring is "Well"

Starting from 0, the substring "Well" can be found to begin at position 4 of the string "Get Well Soon!".

Therefore, the function strpos("Get Well Soon!", "Well") will return 4.

Then, with the echo statement, which is used for printing, value 4 will be printed as output of the code.

Answer:

C. Spoofing.

Explanation:

Cyber security can be defined as preventive practice of protecting computers, software programs, electronic devices, networks, servers and data from potential theft, attack, damage, or unauthorized access by using a body of technology, frameworks, processes and network engineers.

Some examples of cyber attacks are phishing, zero-day exploits, denial of service, man in the middle, cryptojacking, malware, SQL injection, spoofing etc.

Spoofing can be defined as a type of cyber attack which typically involves the deceptive creation of packets from an unknown or false source (IP address), as though it is from a known and trusted source. Thus, spoofing is mainly used for the impersonation of computer systems on a network.

Basically, the computer of an attacker or a hacker assumes false internet address during a spoofing attack so as to gain an unauthorized access to a network.

Answer:

Answer:Data Types. Computer systems work with different types of digital data. In the early days of computing, data consisted primarily of text and ...

Answer:

b. The constructor for the parent class is called.

Explanation:

In this case this specific piece of code is calling the constructor for the parent class. Since a MountainBike object is being created. This creation uses the MountainBike class constructor but since this is a subclass of the Bicycle class, the super() method is calling the parent class constructor and passing the variables startCadence, startSpeed, startGear to that constructor. The Bicycle constructor is the one being called by super() and it will handle what to do with the variables inputs being passed.

Answer:

a. Determine your needs

b. make the Assessments of  the resources available to you,

c. do a ranking of the resources in order of their usefulness to you,

d. create or allow the time to make use of the resources.

Explanation:

technology strategy is a concept that gives the important elements of a department and how these elements can interact with each other in order to get the continuous value.

The correct order is to first determine what your needs are, then you carry out an assessment of all the resources that you have at your disposal, then you rank these resources from the most useful to the least and the last is for you to create the time that you would have to use these resources.

Answer:

The answer is "Developing the custom control for the user interface"

Explanation:

The major difference between customized control & user control would be that it inherit throughout the inheritance tree at different levels. Usually, a custom power comes from the system. Windows. UserControl is a system inheritance.

Using accuracy up is the major reason for designing a custom UI control. Developers must know how to use the API alone without reading the code for your component. All public methods and features of a custom control will be included in your API.

Answer:

kdkskskiisidiodoosooddodod

Answer:

The correct answer is A) Support Analyst

Explanation:

From the question, we can see that Roland is familiar with both machines and software. He is familiar with the operations of both parts of a computer to the end that he can attempt a fix. And if he can't he knows who to refer the end-users to. Usually, some IT personnel that is more experienced.

From the above points, we can safely say that Roland is an IT Support Analyst. He cannot be the Systems analyst because Systems Analysts are usually at the top of the Pyramid. They take on problems that are referred upwards to them from support analysts.

Cheers

Answer:

The target computer's operating system and gain unauthorized access to the hardware, hook into the keyboard with functions provided by the OS, or use remote access software to transmit recorded data out of the target computer to a remote location.

No physical sensation of pressing a button results in misfires. Lack of physical divisions between keys makes touch typing impossible. Smaller key spacing results in typos.

Answer:

The important problem is explained in the next section of clarification.

Explanation:

The longer it is required for a computing device interrupt to have been performed when it is created, is determined as Interrupt latency.

The accompanying duties include interrupt transmission delay or latency are provided below:

Answer:

B. Hardware and software applications on either end could not talk to one another.

Explanation:

The answer to this question is that making connection to the internet used to be very slow, it's operation was difficult and so was its maintenance. Therefore they could be said to be unreliable at the time making electronic information sharing difficult as well as challenging. From this explanation the right answer to this question is answer option b.

Thank you.

Answer:

ensure integrity. primary key is unique key..foreign key is to connect 2 table.normalization to ensure you keep track on what you should do to create db..

Answer:

The answer is "False"

Explanation:

It is put to use Six Sigma had 3.4 defects per million opportunities (DPMO) from the start, allowing for a 1.5-sigma process shift. However, the definition of zero faults is a little hazy. Perhaps the area beyond 3.4 DPMO is referred to by the term "zero faults.", that's why Before being released, large computer programs, such as operating systems, must have no faults the wrong choice.

Answer: Computer operator

Explanation:

Following the information given, we can deduce that Connie is employed as a computer operator. A computer operator is a role in IT whereby the person involved oversees how the computer systems are run and also ensures that the computers and the machines are running properly.

Since Connie keeps the operating systems up-to-date, ensures that memory and disk storage are available, and oversees the physical environment of the computer, then she performs the role of a computer operator.

Answer:

D. MAN

Explanation:

A local area network (LAN) refers to a group of personal computers (PCs) or terminals that are located within the same general area and connected by a common network cable (communication circuit), so that they can exchange information from one node of the network to another. A local area network (LAN) is typically used in small or limited areas such as a set of rooms, a single building, school, hospital, or a set of well-connected buildings. Some of the network devices or equipments used in a local area network (LAN) includes an access point, personal computers, a switch, a router, printer, etc.

On the other hand, a metropolitan area network (MAN) is formed by an aggregation of multiple local area network (LAN) that are interconnected using backbone provided by an internet service provider (ISP). A metropolitan area network (MAN) spans for about 5 kilometers to 50 kilometers in size.

Basically, a metropolitan area network (MAN) spans across a geographic area such as a city and it's larger than a local area network (LAN) but significantly smaller than a wide area network (WAN).

In conclusion, the network type that the patrol services of a city's police department would most likely use is a metropolitan area network (MAN).

Answer:

The correct answer is D. Man.

Explanation:

I got it right on the Edmentum test.

Answer:

Explanation:

The following code is written in Java. It creates a loop within a loop that plays the game 10 times. As soon as the inner loop tosses a Heads (represented by 1) the inner loop breaks and the cost of that game is printed to the screen. A test case has been made and the output is shown in the attached image below.

import java.util.Random;

import java.util.Scanner;

class Brainly {

   public static void main(String[] args) {

       int count = 0;

       int loopCount = 0;

       while (loopCount < 10) {

           while (true) {

               Random rand = new Random();

               int coinFlip = rand.nextInt(2);

               count++;

               if (coinFlip == 1) {

                   System.out.println("Cost: $" + 2*count);

                   count = 0;

                   break;

               }

               loopCount++;

           }

       }

   }

}

Answer:

The output is:

1 2 3 4 5

Explanation:

Given

See attachment for code segment

Required

The output of rec2(5)

From the attached code segment, we have the following:

The base case: if (x==0){ return;}

The above implies that, the recursion ends when the value of x gets reduced to 0

The recursion:

rec2(x-1); ---- This continually reduces x by 1 and passes the value to the function

printf("%d ", x); This prints the passed value of x

Hence, the output of rec2(5) is: 1 2 3 4 5

Answer:

First remove ur mask then am to give you the evolutions

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djmsjs

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jsmsjjdmssjsmjdjd

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sujdjdjd s

sujdjdjd

syshdhjdd

Answer:

764217360

Explanation:

Answer:

Pyramidal Space Frame Glamorizes Swimming Pool 15. News Briefs 16 ... to use every pound of steel with no sacrifice in safety or ... form of steel trusses in an inverted coni- ... be embedded in the concrete slab when.

Explanation:

I HOPE THIS HELPS

Answer:

The answer is "Option c"

Explanation:

In PHP to remove all the session variables, we use the session_destroy() function. It doesn't take any argument is required and then all sessions variables could be destroyed by a single call. If a particular clinical variable is now to be destroyed, the unset() function can be applied to unset a session variable. Its session doesn't unset or unset the session cookie by either of the local variables associated with it.

Answer:

i hope understand you

mark me brainlist

Explanation:

using namespace std;

#include <iostream>

#include <string.h>

#include <stdlib.h>

#include <stdio.h>

#define BLANK_CHAR (' ')

int CountCharacters(char userChar, char * userString)

{

int countReturn=0;

int n = strlen(userString);

for (int iLoop=0; iLoop<n; iLoop++)

{

       if (userString[iLoop]==userChar)

       {

        countReturn++;

 }

}

return(countReturn);

}

/******************************************

    Removes white spaces from passed string; returns pointer

     to the string that is stripped of the whitespace chars;

  Returns NULL pointer is empty string is passed;  

     Side Effects:

 CALLER MUST FREE THE OUTPUT BUFFER that is returned

 **********************************************************/

char * RemoveSpaces(char * userString)

{

 char * outbuff = NULL;

 if (userString!=NULL)

 {

   int n = strlen(userString);

    outbuff = (char *) malloc(n);

   if (outbuff != NULL)

   {

          memset(outbuff,0,n);

          int iIndex=0;

          //copies non-blank chars to outbuff

         for (int iLoop=0; iLoop<n; iLoop++)

         {

           if (userString[iLoop]!=BLANK_CHAR)

          {

           outbuff[iIndex]=userString[iLoop];

           iIndex++;

   }

   } //for

   }

   }

 return(outbuff);

}

int main()

{

 char inbuff[255];

 cout << " PLEASE INPUT THE STRING OF WHICH YOU WOULD LIKE TO STRIP WHITESPACE CHARS :>";

 gets(inbuff);

 char * outbuff = RemoveSpaces(inbuff);

 if (outbuff !=NULL)

 {

    cout << ">" << outbuff << "<" << endl;

    free(outbuff);

    }

   memset(inbuff,0,255);  

   cout << " PLEASE INPUT THE STRING IN WHICH YOU WOULD LIKE TO SEARCH CHAR :>";

gets(inbuff);

  char chChar;

 cout << "PLEASE INPUT THE CHARCTER YOU SEEK :>";

 cin >> chChar;

 int iCount = CountCharacters(chChar,inbuff);

 cout << " char " << chChar << " appears " << iCount << " time(s) in >" << inbuff << "<" << endl;

}

Answer:

Explanation:

The following is written in Java. It uses File input, to get the file and read every line in the file. It adds all the lines into a variable called fullString. Then it uses regex to split the string into separate words. Finally, it maps the words into an array that counts all the words and how many times they appear. A test case has been created and the output can be seen in the attached image below. Due to technical difficulties I have added the code as a txt file below.

Answer:

Explanation:

Using the main() and Instrument class which can be found online. We can create the following StringInstrument class that extends the Instrument class itself. The only seperate variables that the StringInstrument class posses' would be the number of Strings (numStrings) and the number of frets (numFrets). Due to technical difficulties I have added the code as a seperate text file below.

Answer:

Explanation:

The code in the question is written in Java but If you want it in Python then it would be much simpler. The code below is writen in Python and uses list slicing to reverse the array that is passed as an argument to the function. The test case from the question was used and the output can be seen in the attached image below.

def reverse(arr):

   reversed_arr = arr[::-1]

   return reversed_arr