How to resolve the algorithm Twin primes step by step in the Frink programming language

Published on 12 May 2024 09:40 PM
#Frink

How to resolve the algorithm Twin primes step by step in the Frink programming language

Table of Contents

Problem Statement

Twin primes are pairs of natural numbers   (P1  and  P2)   that satisfy the following:

Write a program that displays the number of pairs of twin primes that can be found under a user-specified number (P1 < user-specified number & P2 < user-specified number).

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Twin primes step by step in the Frink programming language

Source code in the frink programming language

upper = eval[input["Enter upper bound:"]]
countTwins[upper]
countTwins[100000]
countTwins[10000000]
countTwins[1000000000]

countTwins[upper] :=
{
   count = 0
   for n = primes[2, upper-2]
      if isPrime[n+2]
         count = count + 1

   println["$count twin primes under $upper"]
}

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