[REFACTOR] [Hacker Rank] Interview Preparation Kit: Arrays: Array Manipulation. Adjusted the interface to match what hackerrank expects.

Author: Gonzalo Diaz

src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.ts

@@ -3,14 +3,14 @@ import { logger as console } from '../../../logger';
 
 import TEST_CASES from './cruch_testcases_test.json';
 
-import { arrayManipulation } from './cruch_bruteforce';
+import crush from './cruch_bruteforce';
 
 describe('arrays: crush (bruteforce) small cases', () => {
   it('arrayManipulation Test Cases', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((test) => {
-      const answer = arrayManipulation(test.n, test.queries);
+      const answer = crush.arrayManipulation(test.n, test.queries);
 
       console.debug(
         `arrayManipulation(${test.n}, ${test.queries.toString()}) solution found: ${answer}`

src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.ts

@@ -5,7 +5,7 @@
 
 import { logger as console } from '../../../logger';
 
-export function arrayManipulation(n: number, queries: number[][]): number {
+function arrayManipulation(n: number, queries: number[][]): number {
   const LENGTH = n + 1;
   const SURROGATE_VALUE = 0;
   const result: number[] = Array<number>(LENGTH).fill(SURROGATE_VALUE);

src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.ts

@@ -3,14 +3,14 @@ import { logger as console } from '../../../logger';
 
 import TEST_CASES from './cruch_testcases_test.json';
 
-import { arrayManipulation } from './cruch_optimized';
+import crush from './cruch_optimized';
 
 describe('arrays: crush (optimized)', () => {
   it('arrayManipulation Test Cases', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((test) => {
-      const answer = arrayManipulation(test.n, test.queries);
+      const answer = crush.arrayManipulation(test.n, test.queries);
 
       console.debug(
         `arrayManipulation(${test.n}, ${test.queries.toString()}) solution found: ${answer}`

src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.ts

@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/crush.md]]
  */
 
-export function arrayManipulation(n: number, queries: number[][]): number {
+function arrayManipulation(n: number, queries: number[][]): number {
   // why adding 2?
   //   first slot to adjust 1-based index and
   //   last slot for storing accumSum result

src/hackerrank/interview_preparation_kit/arrays/cruch_testcases_test.json

@@ -3,70 +3,30 @@
     "title": "Sample Test Case 0",
     "n": 5,
     "queries": [
-      [
-        1,
-        2,
-        100
-      ],
-      [
-        2,
-        5,
-        100
-      ],
-      [
-        3,
-        4,
-        100
-      ]
+      [1, 2, 100],
+      [2, 5, 100],
+      [3, 4, 100]
     ],
     "expected": 200
   },
   {
     "title": "Sample Test Case 1",
     "n": 10,
     "queries": [
-      [
-        1,
-        5,
-        3
-      ],
-      [
-        4,
-        8,
-        7
-      ],
-      [
-        6,
-        9,
-        1
-      ]
+      [1, 5, 3],
+      [4, 8, 7],
+      [6, 9, 1]
     ],
     "expected": 10
   },
   {
     "title": "Sample Test Case 3",
     "n": 10,
     "queries": [
-      [
-        2,
-        6,
-        8
-      ],
-      [
-        3,
-        5,
-        7
-      ],
-      [
-        1,
-        8,
-        1
-      ],
-      [
-        5,
-        9,
-        15
-      ]
+      [2, 6, 8],
+      [3, 5, 7],
+      [1, 8, 1],
+      [5, 9, 15]
     ],
     "expected": 31
   }