Java class that prints the fractions of positives, negatives and zeroes in an array.

FractionsOfPositivesNegativesAndZeroesInArray.java

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class FractionsOfPositivesNegativesAndZeroesInArray {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int arr[] = new int[n];
        for(int arr_i=0; arr_i < n; arr_i++){
            arr[arr_i] = in.nextInt();
        }
        
        printFractionsOfPositivesNegativesAndZeroes(arr);
    }
    
    private static void printFractionsOfPositivesNegativesAndZeroes(int[] array)
    {
        double positivesFraction = 0, negativesFraction = 0, zeroesFraction = 0;
        
        for(int i = 0; i < array.length; i++)
        {
            if(array[i] < 0)
                negativesFraction += 1.0 / array.length;
            if(array[i] == 0)
                zeroesFraction += 1.0 / array.length;
            if(array[i] > 0)
                positivesFraction += 1.0 / array.length;
        }
        
        System.out.println(String.format("%.6f", positivesFraction));
        System.out.println(String.format("%.6f", negativesFraction));
        System.out.println(String.format("%.6f", zeroesFraction));
    }
}