From cd6b3e8308f4fcd433c6c0f001e7069beea35336 Mon Sep 17 00:00:00 2001
From: Janvi Singhal <janvisinghal10@gmail.com>
Date: Mon, 27 Oct 2025 09:17:12 +0530
Subject: [PATCH] Add countZero.py to count the number of zeros in an integer
 array

---
 Python/countZero.py | 75 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 Python/countZero.py

diff --git a/Python/countZero.py b/Python/countZero.py
new file mode 100644
index 0000000..938839b
--- /dev/null
+++ b/Python/countZero.py
@@ -0,0 +1,75 @@
+"""
+countZero.py
+
+Count the number of zeros in an integer array.
+
+Input format (stdin):
+ - First line: an integer n = number of elements
+ - Second line: n integers separated by spaces (or multiple lines allowed)
+
+Output:
+ - Prints the count of elements equal to 0.
+
+If run with no/invalid input, a small self-test runs instead.
+"""
+
+from typing import Iterable
+import sys
+
+
+def count_zeros(iterable: Iterable[int]) -> int:
+	"""Return the number of zeros in the given iterable of integers.
+
+	Args:
+		iterable: An iterable of integers.
+
+	Returns:
+		The count of values equal to 0.
+	"""
+	c = 0
+	for x in iterable:
+		if x == 0:
+			c += 1
+	return c
+
+
+def parse_input(stream) -> list:
+	"""Parse input from a stream and return a list of integers.
+
+	Expected: first token may be n (ignored if present), remaining tokens are treated as numbers.
+	"""
+	data = stream.read().strip().split()
+	if not data:
+		return []
+	# If first token looks like the count and matches remaining length, skip it
+	try:
+		nums = [int(tok) for tok in data]
+	except ValueError:
+		raise
+
+	if len(nums) >= 2 and nums[0] == len(nums) - 1:
+		return nums[1:]
+	# Otherwise return all tokens
+	return nums
+
+
+def main() -> int:
+	try:
+		arr = parse_input(sys.stdin)
+	except Exception:
+		print("Error: failed to parse input. Expected integers.")
+		return 1
+
+	if not arr:
+		# self-test / demo
+		demo = [0, 1, 0, 2, 0, 3]
+		print("No input detected — running demo array:", demo)
+		print("Zero count:", count_zeros(demo))
+		return 0
+
+	print(count_zeros(arr))
+	return 0
+
+
+if __name__ == '__main__':
+	raise SystemExit(main())