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Feb 17th, 2019
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  1. import java.util.Scanner;
  2. public class SumPrimeNonPrime {
  3. public static void main(String[] args) {
  4. Scanner input=new Scanner(System.in);
  5. int sumPrime=0,sumNotPrime=0;
  6.  
  7.  
  8. while(true){
  9. String str=input.nextLine();
  10. boolean flag=false;
  11.  
  12. if(str.equals("stop")){
  13. break;
  14. }
  15. int number=Integer.parseInt(str);
  16. if(number<0){
  17. System.out.println("Number is negative.");
  18. continue;
  19. }
  20. for(int i=2;i<=number/2;++i){
  21. if(number%i==0){
  22. flag=true;
  23. break;
  24. }
  25. }
  26. if(!flag){
  27. sumPrime+=number;
  28. }else{
  29. sumNotPrime+=number;
  30. }
  31.  
  32. }
  33. System.out.println("Sum of all prime numbers is: "+sumPrime);
  34. System.out.println("Sum of all non prime numbers is: "+sumNotPrime);
  35. }
  36. }
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