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SOVA2 [1]
3 years ago
5

Assume that a 5 element array of type string named boroughs has been declared and initialized. Write the code necessary to switc

h (exchange) the values of the first and last elements of the array. So, for example, if the array's initial values were: brooklyn queens staten_island manhattan bronx then after your code executed, the array would contain: bronx queens staten_island manhattan brooklyn
Computers and Technology
1 answer:
hammer [34]3 years ago
6 0

Answer:

Explanation:

Let's do this in python. First we can set a placeholder variable to hold the first element of the array, then we can set that first element to the last element (5th) of that array. Then we set the last element of that array to the placeholder, which has value of the original first element of the array

placeholder = boroughs[0] # in python, 0 is the first element or arra

boroughs[0] = boroughs[-1] # -1 means the last element of the array

boroughs[-1] = placeholder

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The full meaning of ENIAC,ABACUS,EDVAC,EDSAC<br>and explain ​
balandron [24]

Answer:

ENIAC: Electronic Numerical Integrator and Computer.

ABACUS: Abundant Beads, Addition and Calculation Utility System.

EDVAC: Electronic Discrete Variable Automatic Computer

EDSAC: Electronic Delay Storage Automatic Computer

7 0
3 years ago
What classes should I take in high-school for majoring in computer science?
Gala2k [10]

Answer:

Computer science are the disciplines that study information, computing and the applications or ecosystems where they are developed. It is a science that comes from applied mathematics and has 3 branches that are quite well known. On the one hand we have software engineering, secondly theory as such (primary study of algorithms and data, etc.) and finally the application of the amalgam of the first two, which end up resulting in disciplines such as big data, cybersecurity or computer security, machine learning, artificial intelligence, etc. However, we are talking about a very broad science with various branches of work. Technological advances that have improved the scope of education, now allow us to develop in specific skills and computer science is one of the macro careers that have benefited the most thanks to the diversity of subjects it encompasses. This is where the on-demand courses available on the edX platform come in. Computer scientists are in one of the best times for their career advancement. We invite you to be part of the technological development and information and computing technologies through online courses.

Explanation:

6 0
2 years ago
When breaking a problem down, you often encounter elements that you want to use repeatedly in your code. Sometimes it's appropri
ddd [48]

<u>Answer:</u>

<em>FUNCTION:</em>

  • A function does not require the number of times that the <em>code script needs to be executed </em>
  • When we go for large programming, ie. while creating projects, we can invoke function from one file to another based on the access <em>specifier mentioned for the function. </em>
  • There is a stack call created in the memory whenever a <em>function is called. </em>

<em>LOOP :</em>

  • Whereas the number of times that the loop has to be <em>executed must be defined </em>
  • A loop cannot be called, it can be used only the code block in <em>which it is present. </em>
  • There is not overhead of creating a stack since it is not invoked and there is no <em>transfer of control from one module to another </em>

8 0
3 years ago
Which of the following can be used to get an integer value from the keyboard?
seraphim [82]

Answer:

Integer.parseInt( stringVariable );

Explanation:

This function is used to convert the string into integer in java .Following are the program that convert the string into integer in java .

public class Main

{

public static void main(String[] args)  // main method

{

 String num = "1056"; // string variable

int res = Integer.parseInt(num);  //convert into integer  

System.out.println(res); // display result

}

}

Output:1056

Therefore the correct answer is:Integer.parseInt( stringVariable );

6 0
3 years ago
See the lseek_example.c file. Modify the lseek_example.c, such that it reads from an input file (named "start.txt") and will pri
andre [41]

Answer:

See the lseek_example.c file. Modify the lseek_example.c, such that it reads from an input file (named "start.txt") and will print to an output file (named "end.txt") every (1+3*i)th character, starting from the 1st character in the input file. In other words, it will print the 1st character, then skip 2 characters and print the 4th one, then skip 2 characters and print the 7th one, and so on.

For instance, for input file:

ABCDEFGHIJKLM

It will output:

ADGJM

Iseek_example.c file contant:

// C program to read nth byte of a file and

// copy it to another file using lseek

#include

#include

#include

#include

void func(char arr[], int n)

{

// Open the file for READ only.

int f_read = open("start.txt", O_RDONLY);

// Open the file for WRITE and READ only.

int f_write = open("end.txt", O_WRONLY);

int count = 0;

while (read(f_read, arr, 1))

{

// to write the 1st byte of the input file in

// the output file

if (count < n)

{

// SEEK_CUR specifies that

// the offset provided is relative to the

// current file position

lseek (f_read, n, SEEK_CUR);

write (f_write, arr, 1);

count = n;

}

// After the nth byte (now taking the alternate

// nth byte)

else

{

count = (2*n);

lseek(f_read, count, SEEK_CUR);

write(f_write, arr, 1);

}

}

close(f_write);

close(f_read);

}

// Driver code

int main()

{

char arr[100];

int n;

n = 5;

// Calling for the function

func(arr, n);

return 0;

}

Explanation:

3 0
3 years ago
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