Answer:
Following is the expression written in "Bash script" (mixture of commands):
^\d{5}(?:[-\s]\d{4})?$
Explanation:
- ^ = For staring string (denotation).
- \d{5} = Matching 5 digits (first five unknown x's)
- (?:…) = Making Group (making group of former 5 digits)
- [-\s] = Match a hyphen or a space
(checking if a hyphen is present?)
- \d{4} = Matching 4 digits (next four unknown x's)
- …? = Pattern before it is optional
- $ = Ending of the string.(denotation)
Answer:
The program to this question can be given as:
Program:
public class Main //define class.
{
public static void main(String[] as) //define main method.
{
int n=5; //define variable n and assign positive value.
int i,j; //define variable
for (i = 7; i>=1; i--) //outer loop.
{
for (j = 0; j< i; j++) //inner loop.
{
System.out.print("*"); //print asterisks.
}
System.out.println(); //line break.
}
}
}
Output:
*****
****
***
**
*
Explanation:
The description of the above code can be given as:
- In the above java programming code firstly we define a class that is "Main". In this class we define a main method in the main method we define a variables that is "n" in this variable we assign a positive value. The we define another integer variable that is i,j this variable is used in the loop.
- Then we define a loop. for prints asterisks values in reverse triangle, we nested looping concept. In nested looping, we use in loop in this loop we use the i and j variables that print the asterisks value.
Answer:
C) public domain
Explanation:
Public domain is when something can use it without any restriction, these domains can be used in Photographs, videos, music, etc.
These files are public because the author has decided, we can use these files in our project without pay nothing and give any reference about the author, is not necessary but you can do it, sometimes you can donate to the author.
Answer:
The solution code is written in C language.
- srand(seedVal);
- printf(" %d \n", rand() % 9);
- printf(" %d \n", rand() % 9);
Explanation:
srand() is a C library function which seeds the random number generator. The srand() function will take one unsigned integer, <em>seedVal</em>, as input parameter (Line 1).
We can print random integer between (and including) 0 and 9 by calculating the random number modulus by 9 (Line 2-3). This will ensure the final random number will also be between 0 and 9.
Hang up, and inform your (real) bank that someone may attempt to steal your identity and your money.
