Challenge: Plus Minus

Given an array of integers, calculate the ratios of its elements that are positive, negative, and zero. Print the decimal value of each fraction on a new line with 6 places after the decimal.

Note: This challenge introduces precision problems. The test cases are scaled to six decimal places, though answers with absolute error of up to

are acceptable.

Example: arr = [1,1,0,-1,-1] There are n = 5 elements, two positive, two negative and one zero. Their ratios are 2/5 =0.4000, 2/5=0.40000 , and 1/5=02.0000

Results are printed as:

0.400000
0.400000
0.200000

Function Description

Complete the plusMinus function in the editor below.

plusMinus has the following parameter(s):

int arr[n]: an array of integers

Print Print the ratios of positive, negative and zero values in the array. Each value should be printed on a separate line with 6 digits after the decimal. The function should not return a value.

Input Format

The first line contains an integer, , the size of the array. The second line contains space-separated integers that describe

Output Format

Print the following 3 lines, each to 6 decimals:

1.proportion of positive values
2.proportion of negative values
3.proportion of zeros

Sample Input

STDIN           Function
-----           --------
6               arr[] size n = 6
-4 3 -9 0 4 1   arr = [-4, 3, -9, 0, 4, 1]

Sample Output

0.500000
0.333333
0.166667

Explanation

There are 3 positive numbers, 2 negative numbers, and 1 zero in the array. The proportions of occurrence are positive: , negative: and zeros: .

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