Add pronic number implementation

Maths/IsPronic.js

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+/*
+ * Author: Akshay Dubey (https://github.com/itsAkshayDubey)
+ * Pronic Number: https://en.wikipedia.org/wiki/Pronic_number
+ * function to check if number is pronic.
+ * return true if number is pronic.
+ * else false
+ */
+
+/**
+ * @function isPronic
+ * @description -> Checking if number is pronic using product of two consecutive numbers
+ * If number is a product of two consecutive numbers, then it is pronic
+ * therefore, the function will return true
+ *
+ * If number is not a product of two consecutive numbers, then it is not pronic
+ * therefore, the function will return false
+ * @param {number} number
+ * @returns {boolean}
+ */
+
+function isPronic (number) {
+  if (number % 2 === 1) {
+    return false
+  }
+
+  for (let i = 0; i <= Math.sqrt(number); i++) {
+  // Checking Pronic Number
+  // by multiplying consecutive
+  // numbers
+    if (number === i * (i + 1)) {
+      return true
+    }
+  }
+  return false
+}
+
+export { isPronic }

Maths/test/IsPronic.test.js

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+import { isPronic } from '../IsPronic'
+
+describe('Testing isPronic function', () => {
+  it('should return if the number is pronic or not for even number', () => {
+    const isPronicNumber = isPronic(2)
+    expect(isPronicNumber).toBe(true)
+  })
+
+  it('should return if the number is pronic or not for even number', () => {
+    const isPronicNumber = isPronic(4)
+    expect(isPronicNumber).toBe(false)
+  })
+
+  it('should return false for odd number', () => {
+    const isPronicNumber = isPronic(7)
+    expect(isPronicNumber).toBe(false)
+  })
+})