[Hacker Rank] Interview Preparation Kit: Arrays: Left Rotation. TEST data moved to JSON.

Author: Gonzalo Diaz

src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.js

@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.md]]
  */
 
-export function rotLeftOne(aNumbers) {
+function rotLeftOne(aNumbers) {
   const first = aNumbers.shift();
   if (first !== undefined) {
     aNumbers.push(first);
@@ -11,7 +11,7 @@ export function rotLeftOne(aNumbers) {
   return aNumbers;
 }
 
-export function rotLeft(aNumbers, dRotations) {
+function rotLeft(aNumbers, dRotations) {
   let output = [...aNumbers];
 
   for (let i = 0; i < dRotations; i++) {

src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.js

@@ -1,42 +1,20 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
-import { rotLeft, rotLeftOne } from './ctci_array_left_rotation.js';
+import arrayLeftRotation from './ctci_array_left_rotation.js';
 
-const ROT_LEFT_ONE_TEST_CASES = [
-  { numbers: [1, 2, 3, 4, 5], expected: [2, 3, 4, 5, 1] },
-  { numbers: [2, 3, 4, 5, 1], expected: [3, 4, 5, 1, 2] },
-  { numbers: [3, 4, 5, 1, 2], expected: [4, 5, 1, 2, 3] },
-  { numbers: [4, 5, 1, 2, 3], expected: [5, 1, 2, 3, 4] },
-  { numbers: [5, 1, 2, 3, 4], expected: [1, 2, 3, 4, 5] }
-];
-
-const ROT_LEFT_TEST_CASES = [
-  { numbers: [1, 2, 3, 4, 5], d_rotations: 4, expected: [5, 1, 2, 3, 4] }
-];
+import ROT_LEFT_TEST_CASES from './ctci_array_left_rotation.testcases.json';
 
 describe('ctci_array_left_rotation', () => {
-  it('rotLeftOne Test Cases', () => {
-    expect.assertions(5);
-
-    ROT_LEFT_ONE_TEST_CASES.forEach((value) => {
-      const answer = rotLeftOne(value.numbers);
-
-      console.debug(`rotLeftOne(${value.numbers}) solution found: ${answer}`);
-
-      expect(answer).toStrictEqual(value.expected);
-    });
-  });
-
   it('rotLeft Test cases', () => {
-    expect.assertions(1);
+    expect.assertions(8);
 
-    ROT_LEFT_TEST_CASES.forEach((value) => {
-      const answer = rotLeft(value.numbers, value.d_rotations);
+    ROT_LEFT_TEST_CASES.forEach((test) => {
+      const answer = arrayLeftRotation.rotLeft(test.input, test.d_rotations);
 
-      console.debug(`rotLeft(${value.numbers}) solution found: ${answer}`);
+      console.debug(`rotLeft(${test.numbers}) solution found: ${answer}`);
 
-      expect(answer).toStrictEqual(value.expected);
+      expect(answer).toStrictEqual(test.expected);
     });
   });
 });

src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json

@@ -0,0 +1,10 @@
+[
+  {"title": "Own 0", "input": [1, 2, 3, 4, 5], "d_rotations": 1, "expected": [2, 3, 4, 5, 1]},
+  {"title": "Own 1", "input": [2, 3, 4, 5, 1], "d_rotations": 1, "expected": [3, 4, 5, 1, 2]},
+  {"title": "Own 2", "input": [3, 4, 5, 1, 2], "d_rotations": 1, "expected": [4, 5, 1, 2, 3]},
+  {"title": "Own 3", "input": [4, 5, 1, 2, 3], "d_rotations": 1, "expected": [5, 1, 2, 3, 4]},
+  {"title": "Own 4", "input": [5, 1, 2, 3, 4], "d_rotations": 1, "expected": [1, 2, 3, 4, 5]},
+  {"title": "Sample Test case 0", "input": [1, 2, 3, 4, 5], "d_rotations": 4, "expected": [5, 1, 2, 3, 4]},
+  {"title": "Sample Test case 1", "input": [41, 73, 89, 7, 10, 1, 59, 58, 84, 77, 77, 97, 58, 1, 86, 58, 26, 10, 86, 51], "d_rotations": 10, "expected": [77, 97, 58, 1, 86, 58, 26, 10, 86, 51, 41, 73, 89, 7, 10, 1, 59, 58, 84, 77]},
+  {"title": "Sample Test case 2", "input": [33, 47, 70, 37, 8, 53, 13, 93, 71, 72, 51, 100, 60, 87, 97], "d_rotations": 13, "expected": [87, 97, 33, 47, 70, 37, 8, 53, 13, 93, 71, 72, 51, 100, 60]}
+]