Programming & Computer Science Answers

You are given this snippet:

int main(){
    int m = 10, n = 20;
    cout << &m << endl;     // Whats is &m?
    int* ptr1 = &m;         // Explain this line.
    cout << ptr1 << endl;   // What is ptr1?
    cout << *ptr1 << endl;  // What is *ptr?
    int* ptr2 = ptr1;       // Explain this line.
    ptr1 = &n;              // Explain this line.
    cout << &ptr1 << endl;  // What is &ptr?
    return 0;
}

Please answer the questions in comments,

You are given a string str, remove all special characters from it and convert all uppercase letters to lowercase, and return the new string.

Special characters are characters that are not letters and digits.

Eg1:

Input: str = "Hello, World 2!"

Output: "helloworld2"

Hint: 1. C++ has many useful functions for this question: isupper, islower, isalpha, isdigit.

string removeSpecialChars(string str){
        
}

Flying fish can leap above or dive under the surface of the water a certain distance. You re given an array gain where gain[i] is the net gain in altitude between point i and point i+1 (please see examples). The fish always start at the water surface (altitude = 0). Return the highest altitude that the fish can reach.

Eg1:

Input: gain = {0, -5, 1, 5, 0, -7}

Output: {3, 1} or {4, 1}

Explanation: The fish start with altitude = 0, then dive -5 (altitude = 0 + (-5) = -5), then emerge 1 (altitude = -5 + 1 = -4), then emerge 5 (altitude = -4 + 5 = 1), then keep the same 0 (altitude = 1 + 0 = 1), then dive -7 (altitude = 1 + (-7) = -6).

Overall, the altitudes are {0, -5, -4, 1, 1, -6}. The highest is 1 at 3rd and 4th point.

Eg2:

Input: gain = {-4, -3, -2, -1, 4, 3, 2}

Output: {0, 0}

Explanation: The altitudes are {0, -4, -7, -9, -10, -6, -3, -1}. The highest is 0.

vector<int> flappyFish(vector<int> gain){
        
}

You are given this class definition:

class Rectangle{
private:
    double side1, side2;    // Side lengths
public:
    Rectangle();    // Default constructor, set side lengths = 0
    Rectangle(double s1, double s2);    // Overloaded constructor
                                        // Set side lengths = s1 and s2
    void setSide(double s1, double s2); // Change side lengths to s1 & s2
    double area();  // Calculate the area of the rectangular
    double perimeter(); // Calculate the perimeter of the rectangular
    double diagonal();  // Calculate the length of the diagonal
    bool isSquare();    // Check if the rectangle is a square
};

Please complete this class.

Chess Game Knight’s travails.

You are required to do the following:

1. Explain how you can ensure that any move do not go off the board.

2. Choosing a search algorithm for finding the shortest path for the knight’s travails.

3. Defend your choice of an appropriate search algorithm to find the best possible move from the starting square to the ending square.

4. Creating a script for a board game and a knight.

5. Create a diagrammatical tree structure, to illustrate all possible moves of the knight as children in the tree structure.

Explain at least not less than five differences between data-oriented programming and object-oriented programming. In your explanations, include concepts of data-oriented design, object-oriented design, and use at least five examples which should include source codes to support your arguments.

I've noticed that I've tried to log into my eBay account an it wants me to use the number that's saved to send security info and the number shows 5xx-xxx-xx62 i want to remove the x to show the number i know how to change a certain setup to text and changes the dots to numbers but this is little different here is the element I'm seeing this in chrome inspection

<p id="text-desc" role="text" aria-label="We'll text you at <span style=&quot;white-space: nowrap;&quot;>5xx-xxx-xx62</span> with a security code.By selecting this method, you agree to receive text or pre-recorded messages to this number. Cell charges may

if there is a way to revival please explain where I will understand, main reason is I wanna see if someone is trying to use my account an i don't recognize the last to numbers of any of my current or past numbers

a. Critically explain why you would consider the concept of using methods in your 

program again running a couple of if else statements.

b. Declare a method with three arguments all of type int. The method should return the 

greatest of the three arguments, however if any two or all three are the same, you 

method should return that value ?

c. Embed you method in a complete program that requests for three variable all of type 

int and display the conditions explained in “b” above. 

d. Critically explain the logic behind the code?

You are given the temperature T of an object in one of Celsius, Fahrenheit, and Kelvin scales.

Write a program to print T in all scales viz Celsius, Fahrenheit, and Kelvin.

Formula to convert from Fahrenheit F to Celsius C is C = (F - 32) * 5 / 9.

Formula to convert from Kelvin K to Celsius C is C = K - 273.

Here "C", "F", "K" represent that the temperature scale is in Celsius, Fahrenheit and Kelvin scales respectively.

The input contains the temperature (a number) and the unit of the temperature scale (C, F, K) without any space.

The output contains temperature in Celsius, Fahrenheit and Kelvin scales in each line in the format similar to input and the value of the temperature is rounded to 2 decimal places.