diff --git a/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.ts b/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.ts
index b72689d8..cc0e6a22 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger';
 
-import { hourglassSum } from './2d_array';
+import twoDarray from './2d_array';
 import TEST_CASES from './2d_array.testcases_test.json';
 
 describe('arrays: 2d Array hourglassSum', () => {
@@ -9,7 +9,7 @@ describe('arrays: 2d Array hourglassSum', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((test) => {
-      const answer = hourglassSum(test.input);
+      const answer = twoDarray.hourglassSum(test.input);
 
       console.debug(
         `gethourGlass(${test.input.toString()}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/2d_array.ts b/src/hackerrank/interview_preparation_kit/arrays/2d_array.ts
index 333e404c..c06fd9cb 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/2d_array.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/2d_array.ts
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/2d_array.md]]
  */
 
-export function gethourGlass(
+function gethourGlass(
   arr: number[][],
   positionX: number,
   positionY: number
@@ -22,7 +22,7 @@ export function gethourGlass(
   return result;
 }
 
-export function hourglassSum(arr: number[][]): number | null {
+function hourglassSum(arr: number[][]): number | null {
   let matrixSize = 0;
 
   if (arr?.[0]) {
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.ts b/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.ts
index 33c27fe7..2ccc4943 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.ts
+++ b/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}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.ts b/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.ts
index 4ebdf654..86fe2ba8 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.ts
+++ b/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);
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.ts b/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.ts
index da06999c..b0491367 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.ts
+++ b/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}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.ts b/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.ts
index a95f77db..ee8f7c8f 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.ts
+++ b/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
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_testcases_test.json b/src/hackerrank/interview_preparation_kit/arrays/cruch_testcases_test.json
index ec7d19ca..fa4f8a1d 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_testcases_test.json
+++ b/src/hackerrank/interview_preparation_kit/arrays/cruch_testcases_test.json
@@ -3,21 +3,9 @@
     "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
   },
@@ -25,21 +13,9 @@
     "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
   },
@@ -47,26 +23,10 @@
     "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
   }
diff --git a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.ts b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.ts
index b47a9fec..36475a91 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.ts
@@ -1,41 +1,34 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger';
 
-import { rotLeft, rotLeftOne } from './ctci_array_left_rotation';
+import arrayLeftRotation from './ctci_array_left_rotation';
 
-import ROT_LEFT_ONE_TEST_CASES from './ctci_array_left_rotation.testcases.json';
+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((test) => {
-      const input = test.numbers;
-      const answer = rotLeftOne(input);
-
-      console.debug(
-        `rotLeftOne(${test.numbers.toString()}) solution found: ${answer.toString()}`
-      );
+interface RotLeftTestCase {
+  title: string;
+  input: number[];
+  d_rotations: number;
+  expected: number[];
+}
 
-      expect(answer).toStrictEqual(test.expected);
-    });
-  });
+const TEST_CASES: RotLeftTestCase[] = ROT_LEFT_TEST_CASES as RotLeftTestCase[];
 
+describe('ctci_array_left_rotation', () => {
   it('rotLeft Test cases', () => {
-    expect.assertions(1);
+    expect.assertions(8);
 
-    const ROT_LEFT_TEST_CASES = [
-      { numbers: [1, 2, 3, 4, 5], d_rotations: 4, expected: [5, 1, 2, 3, 4] }
-    ];
-
-    ROT_LEFT_TEST_CASES.forEach((value) => {
-      const answer = rotLeft(value.numbers, value.d_rotations);
+    TEST_CASES.forEach((test: RotLeftTestCase) => {
+      const answer = arrayLeftRotation.rotLeft(
+        test.input,
+        Number(test.d_rotations)
+      );
 
       console.debug(
-        `rotLeft(${value.numbers.toString()}) solution found: ${answer.toString()}`
+        `rotLeft(${test.input.toString()}) solution found: ${test.expected.toString()}`
       );
 
-      expect(answer).toStrictEqual(value.expected);
+      expect(answer).toStrictEqual(test.expected);
     });
   });
 });
diff --git a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json
index aa06f8ae..086230cf 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json
+++ b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json
@@ -1,7 +1,10 @@
 [
-    {"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]}
+  {"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 1", "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]}
 ]
diff --git a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.ts b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.ts
index b60de67e..6376d2e6 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.ts
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.md]]
  */
 
-export function rotLeftOne(aNumbers: number[]): number[] {
+function rotLeftOne(aNumbers: number[]): number[] {
   const first = aNumbers.shift();
   if (first !== undefined) {
     aNumbers.push(first);
@@ -11,7 +11,7 @@ export function rotLeftOne(aNumbers: number[]): number[] {
   return aNumbers;
 }
 
-export function rotLeft(aNumbers: number[], dRotations: number): number[] {
+function rotLeft(aNumbers: number[], dRotations: number): number[] {
   let output = [...aNumbers];
 
   for (let i = 0; i < dRotations; i++) {
diff --git a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.ts b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.ts
index 1b91aaf9..a6088b3c 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger';
 
-import { minimumSwaps } from './minimum_swaps_2';
+import ms2 from './minimum_swaps_2';
 
 import TEST_CASES from './minimum_swaps_2.testcases.json';
 
@@ -10,7 +10,7 @@ describe('minimum swaps 2', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((test) => {
-      const answer = minimumSwaps(test.input);
+      const answer = ms2.minimumSwaps(test.input);
 
       console.debug(
         `minimumSwaps(${test.input.toString()}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.ts b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.ts
index 81f3113c..11f65926 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.ts
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.md]]
  */
 
-export function minimumSwaps(arr: number[]): number {
+function minimumSwaps(arr: number[]): number {
   const indexedGroup = arr.map((x) => x - 1);
   let swaps = 0;
   let index = 0;
diff --git a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.ts b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.ts
index 3c708d9e..fd043c27 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger';
 
-import { minimumBribesTransform } from './new_year_chaos';
+import nyc from './new_year_chaos';
 
 import TEST_CASES from './new_year_chaos.testcases.json';
 
@@ -10,7 +10,8 @@ describe('new_year_chaos', () => {
     expect.assertions(5);
 
     TEST_CASES.forEach((value) => {
-      const answer = minimumBribesTransform(value.input);
+      const answer = nyc.minimumBribesText(value.input);
+      nyc.minimumBribes(value.input);
 
       console.debug(
         `minimumBribesTransform(${value.input.toString()}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.testcases.json b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.testcases.json
index 5527c31e..1679946f 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.testcases.json
+++ b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.testcases.json
@@ -1,27 +1,27 @@
 [
-    {
-      "title": "Test Case 0-0",
-      "input": [2, 1, 5, 3, 4],
-      "expected": 3
-    },
-    {
-     "title": "Test Case 0-1",
-     "input": [2, 5, 1, 3, 4],
-     "expected": "Too chaotic"
-    },
-    {
-     "title": "Test Case 1-1",
-     "input": [5, 1, 2, 3, 7, 8, 6, 4],
-     "expected": "Too chaotic"
-    },
-    {
-      "title": "Test Case 1-2",
-      "input": [1, 2, 5, 3, 7, 8, 6, 4],
-      "expected": 7
-    },
-    {
-      "title": "Test Case 2",
-      "input": [1, 2, 5, 3, 4, 7, 8, 6],
-      "expected": 4
-    }
-  ]
+  {
+    "title": "Test Case 0-0",
+    "input": [2, 1, 5, 3, 4],
+    "expected": "3"
+  },
+  {
+    "title": "Test Case 0-1",
+    "input": [2, 5, 1, 3, 4],
+    "expected": "Too chaotic"
+  },
+  {
+    "title": "Test Case 1-1",
+    "input": [5, 1, 2, 3, 7, 8, 6, 4],
+    "expected": "Too chaotic"
+  },
+  {
+    "title": "Test Case 1-2",
+    "input": [1, 2, 5, 3, 7, 8, 6, 4],
+    "expected": "7"
+  },
+  {
+    "title": "Test Case 2",
+    "input": [1, 2, 5, 3, 4, 7, 8, 6],
+    "expected": "4"
+  }
+]
diff --git a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.ts b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.ts
index b8b39046..2d6c3c4c 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.ts
+++ b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.ts
@@ -2,10 +2,10 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/new_year_chaos.md]]
  */
 
-export const TOO_CHAOTIC_ERROR = 'Too chaotic';
-export const NEW_YEAR_CHAOS_TOLERANCE = 2;
+const TOO_CHAOTIC_ERROR = 'Too chaotic';
+const NEW_YEAR_CHAOS_TOLERANCE = 2;
 
-export function minimumBribes(q: number[]): number {
+function minimumBribesCalculate(q: number[]): number {
   let bribes = 0;
   let i = 0;
 
@@ -15,7 +15,10 @@ export function minimumBribes(q: number[]): number {
       throw new Error(TOO_CHAOTIC_ERROR);
     }
 
-    const fragment = q.slice(Math.max(value - NEW_YEAR_CHAOS_TOLERANCE, 0), i);
+    const fragment = q.slice(
+      Math.min(Math.max(value - NEW_YEAR_CHAOS_TOLERANCE, 0), i),
+      i
+    );
 
     fragment.forEach((k) => {
       if (k > value) {
@@ -28,11 +31,11 @@ export function minimumBribes(q: number[]): number {
   return bribes;
 }
 
-export function minimumBribesTransform(queue: number[]): number | string {
-  let result: number | string = '';
+function minimumBribesText(queue: number[]): string {
+  let result = '';
 
   try {
-    result = minimumBribes(queue);
+    result = `${minimumBribesCalculate(queue)}`;
   } catch (err: unknown) {
     if (err instanceof Error) {
       result = err.message;
@@ -42,4 +45,8 @@ export function minimumBribesTransform(queue: number[]): number | string {
   return result;
 }
 
-export default { minimumBribes, minimumBribesTransform, TOO_CHAOTIC_ERROR };
+function minimumBribes(q: number[]): void {
+  console.log(minimumBribesText(q));
+}
+
+export default { minimumBribes, minimumBribesText, TOO_CHAOTIC_ERROR };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.ts b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.ts
index 2705b840..dc910fb9 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.ts
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger';
 
-import { countTriplets } from './count_triplets_1_bruteforce';
+import CountTriplets from './count_triplets_1_bruteforce';
 
 import SMALL_TEST_CASES from './count_triplets_1.small.testcases.json';
 
@@ -10,7 +10,7 @@ describe('count_triplets_1', () => {
     expect.assertions(4);
 
     SMALL_TEST_CASES.forEach((test) => {
-      const answer = countTriplets(test.input, test.r);
+      const answer = CountTriplets.countTriplets(test.input, test.r);
 
       console.debug(
         `countTriplets(${test.input.toString()}, ${test.r}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.ts b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.ts
index ffc33a2c..40780981 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.ts
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.ts
@@ -4,7 +4,7 @@
  */
 import { logger as console } from '../../../logger';
 
-export function countTriplets(arr: number[], ratio: number): number {
+function countTriplets(arr: number[], ratio: number): number {
   const size = arr.length;
   let counter = 0;
 
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.ts b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.ts
index ee82d24c..6d3676ed 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.ts
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger';
 
-import { countTriplets } from './count_triplets_1_optmized';
+import CountTriplets from './count_triplets_1_optmized';
 
 import SMALL_TEST_CASES from './count_triplets_1.small.testcases.json';
 import BIG_TEST_CASES from './count_triplets_1.big.testcases.json';
@@ -11,7 +11,7 @@ describe('count_triplets_1 (optimized)', () => {
     expect.assertions(4);
 
     SMALL_TEST_CASES.forEach((test) => {
-      const answer = countTriplets(test.input, test.r);
+      const answer = CountTriplets.countTriplets(test.input, test.r);
 
       console.debug(
         `countTriplets(${test.input.toString()}, ${test.r}) solution found: ${answer}`
@@ -25,7 +25,7 @@ describe('count_triplets_1 (optimized)', () => {
     expect.assertions(1);
 
     BIG_TEST_CASES.forEach((test) => {
-      const answer = countTriplets(test.input, test.r);
+      const answer = CountTriplets.countTriplets(test.input, test.r);
 
       console.debug(
         `countTriplets(${test.input.toString()}, ${test.r}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.ts b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.ts
index 277a80aa..a20ea6fe 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.ts
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.ts
@@ -3,7 +3,7 @@
  * @see Solution Notes: [[docs/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1-solution-notes.md]]
  */
 
-export function countTriplets(arr: number[], ratio: number): number {
+function countTriplets(arr: number[], ratio: number): number {
   let triplets = 0;
 
   const aCounter: Record<number, number> = arr.reduce(
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.ts b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.ts
index 2a7b1447..0f113c7c 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.ts
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger';
 
-import { twoStrings } from './two_strings';
+import twoStrings from './two_strings';
 
 import TEST_CASES from './two_strings.testcases.json';
 
@@ -11,7 +11,7 @@ describe('two_strings', () => {
 
     TEST_CASES.forEach((testCase) => {
       testCase?.test.forEach((test) => {
-        const answer = twoStrings(test.s1, test.s2);
+        const answer = twoStrings.twoStrings(test.s1, test.s2);
 
         console.debug(
           `twoStrings(${test.s1}, ${test.s2}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.ts b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.ts
index 878e7caa..e7123698 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.ts
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.ts
@@ -5,7 +5,7 @@
 const __YES__ = 'YES';
 const __NO__ = 'NO';
 
-export function twoStringsCompute(s1: string, s2: string): boolean {
+function twoStringsCompute(s1: string, s2: string): boolean {
   for (const char of s1) {
     if (s2.includes(char)) {
       return true;
@@ -14,7 +14,7 @@ export function twoStringsCompute(s1: string, s2: string): boolean {
   return false;
 }
 
-export function twoStrings(s1: string, s2: string): string {
+function twoStrings(s1: string, s2: string): string {
   return twoStringsCompute(s1, s2) ? __YES__ : __NO__;
 }