prettier fixes & added test cases for Project Euler problem 4 (#1566)

* 📦 NEW: Added solution for ProjectEuler-007

* 🐛 FIX: Spelling mistake fixes

* 👌 IMPROVE: changed variable name from `inc` to `candidateValue` and thrown error in case of invalid input

* 👌 IMPROVE: Modified the code

* 👌 IMPROVE: Added test case for ProjectEuler Problem001

* 👌 IMPROVE: Added test cases for Project Euler Problem 4

* 👌 IMPROVE: auto prettier fixes

---------

Co-authored-by: Omkarnath Parida <omkarnath.parida@yocket.in>

Recursive/test/BinaryEquivalent.test.js

@@ -1,29 +1,29 @@
-import { binaryEquivalent } from "../BinaryEquivalent";
+import { binaryEquivalent } from '../BinaryEquivalent'
 
 const tests = [
-    {
-        test: 2,
-        expectedValue: "10"
-    },
-    {       
-        test: 0,
-        expectedValue: "0"
-    },
-    {
-        test: 543,
-        expectedValue: "1000011111"
-    },
-    {
-        test: 4697621023,
-        expectedValue: "100011000000000000000001000011111"
-    }
+  {
+    test: 2,
+    expectedValue: '10'
+  },
+  {
+    test: 0,
+    expectedValue: '0'
+  },
+  {
+    test: 543,
+    expectedValue: '1000011111'
+  },
+  {
+    test: 4697621023,
+    expectedValue: '100011000000000000000001000011111'
+  }
 ]
 
-describe("Binary Equivalent", () => {
-    test.each(tests)(
-        "of $test should be $expectedValue",
-        ({test, expectedValue}) => {
-            expect(binaryEquivalent(test)).toBe(expectedValue);
-        }
-    )
+describe('Binary Equivalent', () => {
+  test.each(tests)(
+    'of $test should be $expectedValue',
+    ({ test, expectedValue }) => {
+      expect(binaryEquivalent(test)).toBe(expectedValue)
+    }
+  )
 })