Answers for "js ?. array"

array

import java.util.Scanner;

public class BooleanPrimes {
    public static void main(String[] argh)
    {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter a number: ");
        int size = scanner.nextInt();
        boolean[] boolarray = new boolean[size];
        generatorBoolArray(boolarray);
    }

    public static boolean[] generatorBoolArray(boolean[] boolArr)
    {
        for (int i = 2; i < boolArr.length; ++i)
        {
            boolArr[i] = true;
        }
        return chickIfIndexisPrime(boolArr, boolArr.length);
    }

    public static boolean[] chickIfIndexisPrime(boolean[] arrIsPrime, int input)
    {
        int start = 2;
        while (start <= input)
        {
            int i = 2;
            boolean isprime = true;
            while(i < start )
            {
                if(start%i == 0) {
                    isprime = false;
                }
                ++i;
            }
            if(isprime==true){
              for(int j=4; j<arrIsPrime.length ;++j)
              {
                  if(j%start ==0)
                  { j=j==start?++j:j;
                      arrIsPrime[j]=false;
                  }
              }
            }
            ++start;

        }
        printArray(arrIsPrime);
        return arrIsPrime;
    }



    public static void printArray(boolean[] arr){
        System.out.println("Prime numbers: ");
        int i=0,j = 0 ;
        while(i<arr.length){
            if(arr[i]==true){
                System.out.print(i+",");
            }
            ++i;
        }System.out.println();

        while(j<arr.length){
            System.out.print("{Index: "+j+" "+arr[j]+"} ");
            ++j;
        }

    }

}