Answer:
The code will display the following on the screen:-
2
0
2
Explanation:
The output is like this because x{2} assigns the value 2 to the integer x.First the value of x is printed on the screen that is 2 and that newline is used to go to the next line.After that function is called doSomething with x passed as the argument. doSomething function assigns the value zero to the variable passed and prints it on the screen.So the next line is 0.Since x is passed by value so no changes will appear in the original argument.Hence the last line printed is 2.
Answer:
public static void print_popcorn_time(int bag_ounces){
if(bag_ounces<3){
System.out.println("Too Small");
}
else if(bag_ounces>10){
System.out.println("Too Large");
}
else{
bag_ounces*=6;
System.out.println(bag_ounces+" seconds");
}
}
Explanation:
Using Java prograamming Language.
The Method (function) print_popcorn_time is defined to accept a single parameter of type int
Using if...else if ....else statements it prints the expected output given in the question
A complete java program calling the method is given below
public class num6 {
public static void main(String[] args) {
int bagOunces = 7;
print_popcorn_time(bagOunces);
}
public static void print_popcorn_time(int bag_ounces){
if(bag_ounces<3){
System.out.println("Too Small");
}
else if(bag_ounces>10){
System.out.println("Too Large");
}
else{
bag_ounces*=6;
System.out.println(bag_ounces+" seconds");
}
}
}
Answer:
No you can not tell that recursion is ever required to solve a problem.
Recursion is required when in the problem, the solution of the input depends on the solution of the subsets of the input.
Iteration is also another form of repetitive approach we follow to solve that kind of problems.
But the difference between recursion and iteration is :
- In recursion we call the function repeatedly to return the result to next level.
- In iteration certain bunch of instructions in a loop are executed until certain conditions met.
Explanation:
For example in the Fibonacci sequence problem, to find 
, we need to compute 
and 
before that.
- In case of recursion we just call the method Fibonacci(n) repeatedly only changing the parameter Fibonacci(n-1), that calculates the value and return it.
Fibonacci(n)
1. if(n==0 or n==1)
2. return 1.
3.else
4. return( Fibonacci(n-1)+Fibonacci(n-1) )
- But in case of iteration we run a loop for i=2 to n, within which we add the value of current
and 
to find the value of 
Fibonacci(n)
1. if(n<=2)
2. result = 1
3. else
4. result1 =1 and result2=1.
5. { result = result1 +result2.
6. result1= result2.
7. result2 = result.
8. }
9. output result.
Answer:
Option B: DNS
Explanation:
Domain Name Server (DNS) is analogous to a phone book where people can look up a person name through numerical phone number. A DNS server is a database that host a database of public IP addresses (e.g. 64.233.160.0) and their associated hostname (e.g. google.com).
Whenever we type domain name in the address bar of our browser (e.g. google.com), that domain will be delivered to DNS server. Inside DNS server the URL will be mapped with its corresponding IP address making it possible for the web request to reach the the target server.
Answer:
True
Explanation:
This is true because noise is one of the most common communication barriers.
