Answer:
The Python code with the function is given below. Testing and output gives the results of certain chosen parameters for the program
Explanation:
def first_last(seq):
if(len(seq) == 0):
return ()
elif(len(seq) == 1):
return (seq[0],)
else:
return (seq[0], seq[len(seq)-1])
#Testing
print(first_last([]))
print(first_last([1]))
print(first_last([1,2,3,4,5]))
# Output
( )
( 1 , )
( 1 , 5 )
Answer:
b
Explanation:
CPU manual provides guides to use a CPU.
Assembler manual provides guide on how to use an assembler and so is the case for compiler.
For a particular machine, it set of instructinos are available with the programmer.
Answer:
It goes like:
public class Program
{
public static void main(String[] args)
{
int j=18;
int sum=0;
for (int i =1; i<7; i++)
{
sum=sum+(i*(j-2));
j=j-2;
}
System.out.println(sum);
}
}
Explanation:
<u>Variables used: </u>
j : controls the first number in product and decreases by 2 each time the loop runs.
sum: saves the values of addition as the loop runs.
Answer:
In c# Dictionary is the collection of keys and value .The dictionary is a generic collection class which is in the System.Collection.Generics namespace. we can represent dictionary like that Dictionary<TKey, TValue> where TKey represent the type of key and TValue is the type of TValue.
Following are the example which represent dictionary as integer and string
using System.Collections.Generic; // namespace
class Test // class test
{
static void Main() // main method
{
var ob = new Dictionary< int,string>(); // type integer and string
dictionary.Add( 2,"hello");
dictionary.Add(143,"hello1);
// The dictionary has 2 pairs.
Console.WriteLine("DICTIONARY 1 " + ob.Count);
}
}
Output:
DICTIONARY 1 :2
Explanation:
In this program we create a dictionary generic class which is integer and string type after that we add the elements in the dictionary by "dictionary.Add method " and finally print the count of dictionary
Doubly linked chain
When a linked chain contains nodes that reference both the next node and the previous node, it is called a doubly linked chain. This type of chain is often used in data structures because it provides a way to easily traverse the data in both directions. However, because each node must reference both the next node and the previous node, doubly linked chains require more memory than singly linked chains.
Learn more here:
brainly.com/question/13100699
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