algorithm: Square free integer (TheAlgorithms#1104)

* feat: Add square free integer implementation

* test: Add unit tests for square free integer

* refactor: Remove trailing whitespace from line 27

* refactor: Fix comments

Author: itsAkshayDubey

Maths/IsSquareFree.js

@@ -0,0 +1,23 @@
+/*
+ * Author: Akshay Dubey (https://github.com/itsAkshayDubey)
+ * Square free integer: https://en.wikipedia.org/wiki/Square-free_integer
+ * function to check if an integer has repeated prime factors.
+ * return false if the number as repeated prime factors.
+ * else true
+ */
+
+/**
+ * @function isSquareFree
+ * @description -> Checking if number is square free using prime factorization
+ * @param {number} number
+ * @returns {boolean} true if the number has unique prime factors, otherwise false
+ */
+
+import { PrimeFactors } from './PrimeFactors.js'
+export const isSquareFree = (number) => {
+  const primeFactorsArray = PrimeFactors(number)
+  if (number <= 0) {
+    throw new Error('Number must be greater than zero.')
+  }
+  return primeFactorsArray.length === new Set(primeFactorsArray).size
+}