From 31053e28057aa9149229e24b42dcabe592b312f0 Mon Sep 17 00:00:00 2001
From: AdvikHegde <hegde.advik1234@gmail.com>
Date: Mon, 6 Oct 2025 09:47:57 +0530
Subject: [PATCH 1/2] Add countNumbersDivisible algorithm with improved logic

---
 src/Math/countNumbersDivisible.js | 56 +++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 src/Math/countNumbersDivisible.js

diff --git a/src/Math/countNumbersDivisible.js b/src/Math/countNumbersDivisible.js
new file mode 100644
index 0000000000..c736e3e7d9
--- /dev/null
+++ b/src/Math/countNumbersDivisible.js
@@ -0,0 +1,56 @@
+/**
+ * Count the numbers divisible by ‘M’ in a given range
+ *
+ * @see {@link https://www.tutorialspoint.com/count-the-numbers-divisible-by-m-in-a-given-range-in-cplusplus}
+ *
+ * We have 3 numbers A, B, M as inputs, A and B defines the numbers range [A, B]
+ * Count the total number of divisibles in that range by number M
+ *
+ * @author Chetan07j
+ */
+
+/**
+ * Function to find total divisibles in given range
+ *
+ * @param {number} num1
+ * @param {number} num2
+ * @param {number} divider
+ *
+ * @returns {number} count of total number of divisibles
+ */
+const countNumbersDivisible = (num1, num2, divider) => {
+  if (
+    typeof num1 !== 'number' ||
+    typeof num2 !== 'number' ||
+    typeof divider !== 'number'
+  ) {
+    throw new Error('Invalid input, please pass only numbers')
+  }
+
+  // Valid number range is num1 < num2, otherwise throw error
+  if (num1 > num2) {
+    throw new Error(
+      'Invalid number range, please provide numbers such that num1 < num2'
+    )
+  }
+
+  // if divider is out of range then return 0
+  // as in such case no divisible exists
+  if (divider > num2) {
+    return 0
+  }
+
+  // Divider cannot be zero, as division by zero is invalid
+  if (divider === 0) {
+    throw new Error('Divider cannot be zero')
+  }
+
+  // Find the number of multiples of divider for num1 and num2
+  // using integer division for accurate counting
+  const divisibleCount =
+    Math.floor(num2 / divider) - Math.floor((num1 - 1) / divider)
+
+  return divisibleCount
+}
+
+export { countNumbersDivisible }

From 966a7b1a8e9be419c4f3dc4a64fd9fa69cd5ad5a Mon Sep 17 00:00:00 2001
From: AdvikHegde <hegde.advik1234@gmail.com>
Date: Mon, 6 Oct 2025 09:57:35 +0530
Subject: [PATCH 2/2] =?UTF-8?q?Rename=20countNumbersDivisible.js=20?=
 =?UTF-8?q?=E2=86=92=20CountNumbersDivisible.js=20to=20follow=20UpperCamel?=
 =?UTF-8?q?Case?=
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Content-Transfer-Encoding: 8bit

---
 src/Math/{countNumbersDivisible.js => CountNumbersDivisible.js} | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 rename src/Math/{countNumbersDivisible.js => CountNumbersDivisible.js} (100%)

diff --git a/src/Math/countNumbersDivisible.js b/src/Math/CountNumbersDivisible.js
similarity index 100%
rename from src/Math/countNumbersDivisible.js
rename to src/Math/CountNumbersDivisible.js