Python: Find the ration of positive numbers, negative numbers and zeroes in an array of integers
Python map: Exercise-12 with Solution
Write a Python program to find the ration of positive numbers, negative numbers and zeroes in an array of integers.
Total number of elements in the give array = n
Ratio:
Positive numbers (n1) : Negative numbers(n2) : Zeroes(n3)
= n1/n : n2/n : n3/n
Sample Solution:
Python Code :
from array import array
def plusMinus(nums):
n = len(nums)
n1 = n2 = n3 = 0
for x in nums:
if x > 0:
n1 += 1
elif x < 0:
n2 += 1
else:
n3 += 1
return round(n1/n,2), round(n2/n,2), round(n3/n,2)
nums = array('i', [0, 1, 2, -1, -5, 6, 0, -3, -2, 3, 4, 6, 8])
print("Original array:",nums)
nums_arr = list(map(int, nums))
result = plusMinus(nums_arr)
print("Ratio of positive numbers, negative numbers and zeroes:")
print(result)
nums = array('i', [2, 1, 2, -1, -5, 6, 4, -3, -2, 3, 4, 6, 8])
print("\nOriginal array:",nums)
nums_arr = list(map(int, nums))
result = plusMinus(nums_arr)
print("Ratio of positive numbers, negative numbers and zeroes:")
print(result)
Sample Output:
Original array: array('i', [0, 1, 2, -1, -5, 6, 0, -3, -2, 3, 4, 6, 8]) Ratio of positive numbers, negative numbers and zeroes: (0.54, 0.31, 0.15) Original array: array('i', [2, 1, 2, -1, -5, 6, 4, -3, -2, 3, 4, 6, 8]) Ratio of positive numbers, negative numbers and zeroes: (0.69, 0.31, 0.0)
Python Code Editor:
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Find current directory and file's directory:
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Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
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