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IceJOKER
23 days ago
15

Which of the following meanings can a $ character assume within a regular expression? (can have more than 1 answer)

Computers and Technology
1 answer:
amid [951]23 days ago
7 0
The answer is: a. A literal dollar sign, b. Shell variable syntax, and c. End-of-line anchor for pattern matching. Explanation: The $ character within a single-quoted regular expression can represent an end-of-line anchor or act as a literal dollar sign. In a double-quoted context, it assumes shell variable syntax.
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python Consider this data sequence: "3 11 5 5 5 2 4 6 6 7 3 -8". Any value that is the same as the immediately preceding value i
oksian1 [950]

int currentNumber,previousNumber = -1, countDuplicates = 0;

do {

cin >> currentNumber;

if ( previousNumber == -1) {

previousNumber = currentNumber;

}else {

if ( previousNumber == currentNumber )

countDuplicates++;

else

previousNumber = currentNumber;

}

} while(currentNumber > 0 );

cout << countDuplicates;

7 0
2 months ago
Given a pattern as the first argument and a string of blobs split by | show the number of times the pattern is present in each b
Amiraneli [1052]

Response:

The code is provided below

Clarification:

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.nio.charset.StandardCharsets;

public class Main {

  /**

  *

  * Process each line of input.

  *

  */

  public static void main(String[] args) throws IOException {

      InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);

      BufferedReader in = new BufferedReader(reader);

      String line;

      while ((line = in.readLine())!= null) {

          String[] splittedInput = line.split(";");

          String pattern = splittedInput[0];

          String blobs = splittedInput[1];

          Main.doSomething(pattern, blobs);

      }

  }

  public static void doSomething(String pattern, String blobs) {

      // Implement your code here. You can create more methods or classes if needed

      int total = 0;

      String arrblobs[] = blobs.split("\\|");

      for (int i = 0; i < arrblobs.length; ++i) {

          int count = 0, index = 0;

          for (;;) {

              int position = arrblobs[i].indexOf(pattern, index);

              if (position < 0)

                  break;

              count++;

              index = position + 1;

          }

          System.out.print(count + "|");

         

          total += count;

      }

      System.out.println(total);

  }

}

5 0
2 months ago
In Section 8.5.4, we described a situation in which we prevent deadlock by ensuring that all locks are acquired in a certain ord
8_murik_8 [964]

Answer:

Refer to Explanation

Explanation:

Dividing this critical section into two parts:

void transaction(Account from, Account to, double amount)

{

Semaphore lock1, lock2;

lock1 = getLock(from);

lock2 = getLock(to);

wait(lock1);

withdraw(from, amount);

signal(lock1);

wait(lock2);

deposit(to, amount);

signal(lock2);

}

This approach is optimal in practice, as separating the critical section avoids any unintended states (for instance, resulting in withdrawing more funds than available).

The straightforward solution of keeping the critical section intact lies in ensuring that locks are acquired in the same order across all transactions. In this scenario, the locks can be sorted, choosing the smaller one to lock first.

4 0
1 month ago
A network administrator has received the IPv6 prefix 2001:DB8::/48 for subnetting. Assuming the administrator does not subnet in
8_murik_8 [964]

Answer:

subnets=65536

Explanation:

As per our knowledge,

--> the address's interface ID portion begins at 64

--> there exists a 48 bit network prefix

therefore,

the bits available for subnets are = 64-48=  16

thus, by utilizing 16 bits, the number of subnets can be calculated as = 2^16 = 65535

6 0
1 month ago
You have configured your firewall to authenticate a group of 100 users who are in your company. You set up the database of users
zubka84 [1067]
Network Access Control (NAC) is essential to ensure that the network is accessed only by authenticated users. It verifies the identity of users, granting network access solely to those who are verified. Various NAC solutions such as Impulse SafeConnect, Extreme Networks, ExtremeControl, Auconet BICS, ForeScout CounterACT, and Pulse Policy Secure can be integrated into the system. By implementing basic profiling, these solutions ensure that only authenticated users engage with the network. Additionally, employing encryption-decryption algorithms can enhance security. Algorithms like RSA and DES can be utilized for encrypting data from the database effectively. Once the information reaches the network component, it can be decrypted by generating the necessary key through the same algorithm. This method ensures that only authorized users can access sensitive information while also preventing data leaks during transmission due to encryption.
4 0
22 days ago
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