Answer:
Can be executed on multiple platforms.
Explanation:
A program is portable if it is not platform dependent. In other words, if the program is not tightly coupled to a particular platform, then it is said to be portable. Portable programs can run on multiple platforms without having to do much work. By platform, we essentially mean the operating system and hardware configuration of the machine's CPU.
Examples of portable programs are those written in;
i. Java
ii. C++
iii. C
Answer:
c. your friend can hash all possible options and discover your secret.
Explanation:
SHA-256 is a set of hash functions that was designed by the NSA. SHA-2 is considered an upgrade on the set that was its predecessor, SHA-1. A hash is a mathematical function that condenses data in a process of one-way encryption. SHA-256 creates hash algoritms that are considered irreversible and unique. However, one of the properties of hashing algorithms is determinism, which means that any computer in the world would be able to compute a particular hash and get the same answer.
Answer:
#include <iostream>
#include <stack>
#include <queue>
#include <string>
int main()
{
while ( true )
{
std::string letters;
std::cout << "Please enter a word (Enter - exit): ";
std::getline( std::cin, letters );
if ( letters.empty() ) break;
std::stack<char>
s( std::stack<char>::container_type( letters.begin(), letters.end() ) );
std::queue<char>
q( std::queue<char>::container_type( letters.begin(), letters.end() ) );
while ( !s.empty() && s.top() == q.front() )
{
s.pop();
q.pop();
}
if ( s.empty() ) std::cout << "The word is a palindrome" << std::endl;
else std::cout << "The word is not a palindrome" << std::endl;
}
return 0;
}
Explanation:
A <em>stack</em> is used to replicate a stack data structure in C++ while <em>Queue </em>container is a replica of the queue data structure in C++, Unlike stack, in the queue container, there are two ends, i.e. front, and back.
In the code above to be able to use used stack and queue, we included the headers #include <stack> and#include <queue>.
