**JAVA **

int length = arr.size(); int countPositive = 0; int countNegative = 0; int countZeroes = 0;

for(int i : arr){
    if(i > 0){
        countPositive++;
    } else if(i < 0){
        countNegative++;
    } else{
        countZeroes++;
    }
}

    double positiveRatio = (double) countPositive / length;
    double negativeRatio = (double) countNegative / length;
    double zeroRatio = (double) countZeroes / length;

    System.out.println(String.format("%.6f", positiveRatio));
    System.out.println(String.format("%.6f", negativeRatio));
    System.out.println(String.format("%.6f", zeroRatio));