CareerCup

Given the two objects below, implement the methods defined in the Phonebook class. This is a simulated phonebook. You should expect LookupByName and LookupByPhoneNumber to be called much more often than AddPerson. Also, this is a multi-threaded simulation so your implementations of the functions other than the constructor should be threadsafe. Feel free to rewrite this in any language of your
choice.

public struct Person 
{
	string name; 
	string phoneNumber; 
}
public class Phonebook 
{
	public Phonebook (List<Person> people) 
	{
	}

	public Person LookupByName(string name) 
	{
	}

	public person LookupByphoneNumber(string phoneNumber) 
	{
	}

	public void Addperson(person person) 
	{
	}
}

Truth Table implementation: Write a function which takes integer as In put parameter (let's say n), print all True (T) , False (F) combinations n times. Here is the example:

for n = 1
Output :
T
F

for n = 2
Output :
T F
F T

For n = 3
Output :

T T T
T T F
T F T
T F F
F T T
F T F
F F T
F F F