Question

Given

int
B[4][4]={...};

Write
a code segment that exchange the values about the main diagonal of
the matrix.

Answer #1

**To swap the values about main Diagonal**

**Approach**

1. In a matrix we have two set of indexes i and j for each element .

2. Indexes of diagonal are same i.e. (0,0) ,( 1,1) , ( 2,2) ,( 3,3)

3.When We say Swap elements so elements below diagonals are swapped with elements above diagonals , leaving the diagonal as it is .

**In Code**

We need two nested loop .Outer Loop will traverse elements row by row and and inner loop will cover element column by column. For each very element we swap B [ i ] [ j ] = B [ j ] [ i ]

Here all the diagonals elements with get swapped by itself.

So we get Code is :

**for (int i = 0; i < 4; i++) {
for (int j = i + 1; j < 4; j++) {**

// use a third variable to swap two elements

**int temp = arr[i][j];
arr[i][j] = arr[j][i];
arr[j][i] = temp;
}**

**For example Output is**

**Input::**

0 10 21 12

1 2 3 11

4 5 6 32

7 8 9 40

**Output(Swaped)::**

0 1 4 7

10 2 5 8

21 3 6 9

12 11 32 40

This is how we can write code segment to swap elements about diagonal in matrix

**If u like the answer then Upvote it and have any doubt
ask in comments**

1. Given the
following segment of code: (If there is nothing output, write
None.)
int x;
int y;
cin >> x;
cin >> y;
while (x > y)
{
x -= 3;
cout << x
<< " ";
}
cout << endl;
a. What are the output and final values of x and
y when the input is 10 for x and 0 for y? [2, 2, 2]
Output
x = ______________
...

In MIPS assembly, write an assembly language version of the
following C code segment:
int A[100], B[100];
for (i=1; i < 100; i++) {
A[i] = A[i-1] + B[i];
}

Write MATLAB code to create a 5x5 matrix A with 2's on the
diagonal, and -1 on the super- and sub-diagonal. Then replace the
(1,1) element of A with a 1.
(Make your commands capable of handling an arbitary sized NxN
matrix by first defining N=5, then using the variable N as the size
in each of the commands.)

public static void main(String[] args) {
//Given the following code :
int[][] array2D = {{3, 4, 5, 1}, {3,6,1,2}, {1,3,6,5};
Answer :
1- All values of array2D are automatically 0 ? Yes or No
2- What is the value of array2D [3] .length ?________
3- The value that array2D.length shows is 12: Yes or
No ?
4- Assign the value of 12 to the element in the third row,
fourth column :
5- the value obtained when calculating array2D [1] [1]...

Exercise 1: Write MATLAB code to create a 5x5 matrix A with 2's
on the diagonal, and -1 on the super- and sub-diagonal. Then
replace the (1,1) element of A with a 1.
(Make your commands capable of handling an arbitary sized NxN
matrix by first defining N=5, then using the variable N as the size
in each of the commands.)

What is the output of the following code segment?
public class Exception {
...
static int divider(int x, int y) {
try {
return x/y;
} catch (ArrayIndexOutOfBoundsException a) {
System.out.print("A");
return 1;
}
}
static int computer(int x, int y) {
try {
return divider(x,y);
}
catch (NullPointerException b) {
System.out.print("B");
}
return 2;
}
public static void main(String args[]){
try {
int i = computer (100, 0);
}
catch (ArithmeticException c) {
System.out.print("C");
}
}
}
ABC
A...

C program.
Given the following code:
int add_and_double(int a, int b)
{
int result = (a + b) * 2;
return result;
}
int main()
{
int val;
val = add_and_double(12, 40);
return 0;
}
where the function main() (i.e. the
caller) calls the function
add_and_double() (i.e. the
callee).
Which of the following actions are taken when
main() calls the function
add_and_double()? Select all that
apply.
a.
Once the callee returns, the
caller frees the stack memory for the
callee's function...

Considering the following code fragment:
#include<stdio.h>
#include <stdlib.h>
int base = 0;
static int bonus;
int* demage (int dmg) {
int* ptr = (int*) malloc(sizeof(int));
static int constant = 1;
*ptr = dmg + constant;
return ptr;
}
int main() {
int HP = 0;
int* dm;
base = 30;
bonus = 20;
for(int i=1; i<4; i++) { HP += i * base; }
dm = demage(10);
HP += bonus - *dm;
printf("Total HP: %i", HP);
return 0;
}
Please...

Q1:
Given the following code, what is returned by tq(4)?
int tq(int num){
if (num == 0) return 0;
else
if (num > 100) return -1;
else
return num + tq( num – 1 );
}
Group of answer choices:
0
4
-1
10
Q2:
Given that values is of type LLNode<Integer> and
references a linked list (non-empty) of Integer objects, what does
the following code do if invoked as mystery(values)?
int mystery(LLNode<Integer> list)
{
if (list.getLink() ==...

Given the following function in C++:
int main(void) {
int a = 2;
int b = myFunction(a);
a = b + 1;
b = myFunction(a);
cout << ”b = ” << b << endl;
return 0;
}
int z = myFunction(int x) {
static int n = 0;
n = n + 1;
int z = x + n;
return z;
}
What is printed by the cout on the screen?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 7 minutes ago

asked 41 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago