merge: Add FindMin (TheAlgorithms#849)

Author: Yatin-kathuria

Maths/FindMin.js

@@ -0,0 +1,23 @@
+/**
+ * @function FindMin
+ * @description Function to find the minimum number given in an array of integers.
+ * @param {Integer[]} nums - Array of Integers
+ * @return {Integer} - The minimum number of the array.
+ */
+
+const findMin = (...nums) => {
+  if (nums.length === 0) {
+    throw new TypeError('Array is empty')
+  }
+
+  let min = nums[0]
+  for (let i = 1; i < nums.length; i++) {
+    if (nums[i] < min) {
+      min = nums[i]
+    }
+  }
+
+  return min
+}
+
+export { findMin }

Maths/test/FindMin.test.js

@@ -0,0 +1,18 @@
+import { findMin } from '../FindMin'
+
+describe('FindMin', () => {
+  test('Should return the minimum number in the array', () => {
+    const min = findMin(2, 5, 1, 12, 43, 1, 9)
+    expect(min).toBe(1)
+  })
+
+  test('Should return the minimum number in the array', () => {
+    const min = findMin(21, 513, 6)
+    expect(min).toBe(6)
+  })
+
+  test('Should throw error', () => {
+    const min = () => findMin()
+    expect(min).toThrow('Array is empty')
+  })
+})