int number = scanner.nextInt(); // Check if the number is prime if (number <= 1) { System.out.println(number + " is Not a Prime number."); } else if (number == 2 || number == 3) { System.out.println(number + " is a Prime number."); // 2 and 3 are prime } else ...
importjava.util.Scanner;classPrimeCheck{publicstaticvoidmain(Stringargs[]){inttemp;booleanisPrime=true;Scannerscan=newScanner(System.in);System.out.println("Enter any number:");//capture the input in an integerintnum=scan.nextInt();scan.close();for(inti=2;i<=num/2;i++){temp=num%i;if(...
Do read the comments to understand the logic of the program. classJavaExample{//method for checking prime numberstaticintcheckPrime(intnum){inti,flag=0;for(i=2;i<=num/2;i++){if(num%i==0){flag=1;break;}}/* If flag value is 0 then the given number num * is a prime number else...
Write a java program to find the sum of all the prime numbers less than a given natural number N. The main purpose of this interview question is to check the programming sense and capabilities to check how good you are to convert existing logic into code
After completing this tutorial, you will find yourself at a moderate level of expertise in prime numbers, factors and multiples, from where you can advance further.PrerequisitesBefore proceeding with this tutorial, you need a basic knowledge of elementary math concepts such number sense, addition, ...
//try this /* To check a prime no : the number should not be divisible in the range of sqrt(number) */ int n=4; n=Convert.ToInt32(Console.ReadLine()); bool prime = true; for(int i=2;i*i<=n;i++) { if(n%i==0) { prime=false; break; } } if(prime==true) { Co...
If you want to square a number in Java, just multiply it by itself. So for example ? 1 } while ((indexMark ^ 2) <= primes.get(primes.size() -1)); could be replaced with ? 1 } while ((indexMark * indexMark) <= primes.get(primes.size() -1)); I make no comment on ...
This same code can be applied in any languages like Python, Go Lang, Java, PHP, Node.js, Javascript, C, C++, .NET, Rust, etc with the same logic and have performance benefits. It is pretty fast based on the number of iterations needed. Performance time checks were not consistent across...
It works on the logic that the else clause of the for loop runs if and only if we don't break out the for loop. That condition is met only when no factors are found, which means that the given number is prime. So, in the else clause, we print that the number is prime. Also ...
Select allOpen in new window /* This nifty little algo - (not mine) - catches prime numbers up to the "i" ubound. My analysis is that the "core" logic (not explaining the obvious functioning of the loops), is that if the inner loop counter ('j') reaches its max, then the 'i'...