**Java**

public static void plusMinus(List<Integer> arr) {
        int positive=0, negative=0, zero=0;
	
    for (Integer integer : arr) {        
        if(integer>0){ 
				positive= positive+1;
        }else if(integer<0){ 
				negative=negative+1;
        }else zero=zero+1;        
    }
														 
BigDecimal size = new BigDecimal(arr.size());
BigDecimal p = new BigDecimal(positive);
System.out.println(p.divide(size, 5, RoundingMode.CEILING));
BigDecimal n = new BigDecimal(negative);
System.out.println(n.divide(size, 5, RoundingMode.CEILING));
BigDecimal z = new BigDecimal(zero);
System.out.println(z.divide(size, 5, RoundingMode.CEILING));
    }
}