Answers for "write a program to print prime numbers from 1 to 100 in java"

Java

Java program to print prime numbers in a given range

// Java program to print prime numbers in a given range
public class PrimeNumberRangeDemo 
{
   public static void main(String[] args) 
   {
      int lowerRange = 10, higherRange = 50;  
      while(lowerRange < higherRange) 
      {
         boolean flag = false;
         for(int a = 2; a <= lowerRange / 2; ++a) 
         {
            if(lowerRange % a == 0)
            {
               flag = true;
               break;
            }
         }
         if(!flag && lowerRange != 0 && lowerRange != 1)
             System.out.print(lowerRange + " ");
         ++lowerRange;
      }
   }
}

Posted by: Guest on February-19-2021

Source

java prime numbers from 1 to 100

public class Main {
  public static void main(String[] args) {
    for (int i = 2; i < 100; ++i) {
      boolean isPrime = true;
      int sqrt = (int)Math.ceil(Math.sqrt(i));
      for (int divisor = 2; divisor <= sqrt; ++divisor) {
        if (i % divisor == 0) {
          isPrime = false;
          break;
        }
      }
      if (isPrime) {
        System.out.println(i);
      }
    }
  }
}

Posted by: Guest on January-25-2021

Java program to print prime numbers upto n

// Java program to print prime numbers upto n
import java.util.Scanner;
public class PrimeNumberUptoN
{
   public static void main(String[] args)
   {
      Scanner sc = new Scanner(System.in);
      int a = 0;
      int n = 0;
      String strPrime = "";
      System.out.println("Please enter the value of n: ");
      int number = sc.nextInt();
      for(a = 1; a <= number; a++)
      {
         int counter = 0;
         for(n = a; n >= 1; n--)
         {
            if(a % n == 0)
            {
               counter = counter + 1;
            }
         }
         if(counter == 2)
         {
            strPrime = strPrime + a + " ";
         }
      }
      System.out.println("prime numbers upto n are: ");
      System.out.println(strPrime);
      sc.close();
   }
}

Posted by: Guest on February-19-2021

Source

Java program to display prime numbers from 1 to 100

public class PrimeNumbersFrom1To100
{
   public static void main(String[] args)
   {
      int maxNumber = 100;
      boolean prime = true;
      String primeNumbers = "";
      for(int a = 1; a <= maxNumber; a++)
      {
         prime = checkPrime(a);
         if(prime)
         {
            primeNumbers = primeNumbers + a + " ";
         }
      }
      System.out.println("Display prime numbers from 1 to " + maxNumber + ": ");
      System.out.println(primeNumbers);
   }
   public static boolean checkPrime(int number)
   {
      int remainder;
      for(int a = 2; a <= number / 2; a++)
      {
         remainder = number % a;
         // if remainder is equal to 0 then number is not prime
         if(remainder == 0)
         {
            return false;
         }
      }
      return true;
   }
}

Posted by: Guest on November-02-2020

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