add binary convert (#521)

* add  binary convert

Maths/BinaryConvert.js

@@ -0,0 +1,10 @@
+const BinaryConvert = (number) => {
+  const result = []
+  let i
+  for (i = number; i > 0; i = parseInt(i / 2)) {
+    result.push(i % 2) // push the value (remainder)to array
+  } return Number(result.reverse().join(''))
+  // reverse index of array as string ,join and change the type of value to become Number
+}
+// call function and value as parameter to passing the value
+export { BinaryConvert }

Maths/test/BInaryConvert.test.js

@@ -0,0 +1,10 @@
+import { BinaryConvert } from '../BinaryConvert'
+
+describe('Binary Convert', () => {
+  it('should return the correct value', () => {
+    expect(BinaryConvert(12)).toBe(1100)
+  })
+  it('should return the correct value of the sum from two number', () => {
+    expect(BinaryConvert(12 + 2)).toBe(1110)
+  })
+})