[REFACTOR] [Hacker Rank] Interview Preparation Kit: Miscellaneous: Flipping bits.

* TEST data moved to JSON.
* Adjusted the interface to match what hackerrank expects.

Author: sir-gon

src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.js

@@ -5,7 +5,7 @@
 const __BINARY_BASE__ = 2;
 const __NUMBER_SIZE_IN_BITS__ = 32;
 
-export function flippingBits(n) {
+function flippingBits(n) {
   let nBinaryStr = n.toString(__BINARY_BASE__);
   nBinaryStr = nBinaryStr.padStart(__NUMBER_SIZE_IN_BITS__, '0');
 
@@ -23,3 +23,4 @@ export function flippingBits(n) {
 }
 
 export default { flippingBits };
+export { flippingBits };

src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.test.js

@@ -2,56 +2,7 @@ import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
 import { flippingBits } from './flipping-bits.js';
-
-const TEST_CASES = [
-  {
-    title: 'Sample Test Case 0',
-    tests: [
-      {
-        input: 2147483647,
-        expected: 2147483648
-      },
-      {
-        input: 1,
-        expected: 4294967294
-      },
-      {
-        input: 0,
-        expected: 4294967295
-      }
-    ]
-  },
-  {
-    title: 'Sample Test Case 1',
-    tests: [
-      {
-        input: 4,
-        expected: 4294967291
-      },
-      {
-        input: 123456,
-        expected: 4294843839
-      }
-    ]
-  },
-  {
-    title: 'Sample Test Case 2',
-    tests: [
-      {
-        input: 0,
-        expected: 4294967295
-      },
-      {
-        input: 802743475,
-        expected: 3492223820
-      },
-      {
-        input: 35601423,
-        expected: 4259365872
-      }
-    ]
-  }
-];
+import TEST_CASES from './flipping-bits.testcases.json';
 
 describe('flipping bits', () => {
   it('flipping bits test cases', () => {

src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.testcases.json

@@ -0,0 +1,54 @@
+[
+  {
+    "title": "Sample Test Case 0",
+    "tests":
+    [
+      {
+        "input": 2147483647,
+        "expected": 2147483648
+      },
+      {
+        "input": 1,
+        "expected": 4294967294
+      },
+      {
+        "input": 0,
+        "expected": 4294967295
+      }
+    ]
+  },
+  {
+    "title": "Sample Test Case 1",
+    "tests":
+    [
+
+      {
+        "input": 4,
+        "expected": 4294967291
+      },
+      {
+        "input": 123456,
+        "expected": 4294843839
+      }
+    ]
+  },
+  {
+    "title": "Sample Test Case 2",
+    "tests":
+    [
+
+      {
+        "input": 0,
+        "expected": 4294967295
+      },
+      {
+        "input": 802743475,
+        "expected": 3492223820
+      },
+      {
+        "input": 35601423,
+        "expected": 4259365872
+      }
+    ]
+  }
+]