kmilliner / HackerRank

My solutions to HackerRank

HackerRank

My solutions to HackerRank challenges.

JavaScript, Python and Go.

You can see my profile here: https://www.hackerrank.com/AminadavG.

All solution here created by me. I have tried to make the most optimal solutions. All of them are less than O(n^2). Most of them are O(n) / O(log n) or even O(1).

Table of Content:

• Easy

• Data Structure

• Data Structure - Array

• Data Structure - Linked List

• Data Structure - Doubly Linked List

• Data Structure - Tree

• Medium

• Hard

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Algorithms

Easy

Simple Array Sum [JavaScript]

• Problem - https://www.hackerrank.com/challenges/simple-array-sum/problem
• Solution - simple-array-sum.js

Compare the Triplets [JavaScript]

• Problem - https://www.hackerrank.com/challenges/compare-the-triplets/
• Solution - compare-the-triplets.js

A Very Big Sum [JavaScript]

• Problem - https://www.hackerrank.com/challenges/a-very-big-sum
• Solution - a-very-big-sum.js

Diagonal Difference [Go]

• Problem - https://www.hackerrank.com/challenges/diagonal-difference
• Solution - diagonal-difference.js

Plus Minus [Go]

• Problem - https://www.hackerrank.com/challenges/plus-minus/problem
• Solution - plus-minus.js

Staircase [Go]

• Problem - https://www.hackerrank.com/challenges/staircase/problem
• Solution - staircase.go

Mini Max Sum [Go]

• Problem - https://www.hackerrank.com/challenges/mini-max-sum/problem
• Solution - mini-max-sum.go

Time Conversion [Go]

• Problem - https://www.hackerrank.com/challenges/time-conversion/submissions
• Solution - time-conversion.go

Designer PDF Viewer [Go]

• Problem - https://www.hackerrank.com/challenges/designer-pdf-viewer
• Solution - designer-pdf-viewer.go

Circular Array Rotation [Go]

• Problem - https://www.hackerrank.com/challenges/circular-array-rotation
• Solution - circular-array-rotation.go

Tutorial Intro [Go]

• Problem - https://www.hackerrank.com/challenges/tutorial-intro
• Solution - tutorial-intro.go

Insertion Sort Part I [JavaScript]

• Problem - https://www.hackerrank.com/challenges/insertionsort1
• Solution - insertionsort1.js

Insertion Sort Part II [JavaScript]

• Problem - https://www.hackerrank.com/challenges/insertionsort2
• Solution - insertionsort2.js

Running time of Alogirthm [JavaScript]

• Problem - https://www.hackerrank.com/challenges/runningtime
• Solution - runningtime.js

Quicksort

• Problem - https://www.hackerrank.com/challenges/quicksort1
• Solution - quicksort1.js

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Data Structure

Array:

Array [Go]

• Problem - https://www.hackerrank.com/challenges/arrays-ds
• Solution - arrays-ds.go

2D Array [Go]

• Problem - https://www.hackerrank.com/challenges/2d-array
• Solution - 2d-array.go

Dynamic Array [Go]

• Problem - https://www.hackerrank.com/challenges/dynamic-array
• Solution - dynamic-array.go

Array Left Rotation [Go]

• Problem - https://www.hackerrank.com/challenges/array-left-rotation
• Solution - array-left-rotation.go

Sparse Arrays [Go]

• Problem - https://www.hackerrank.com/challenges/sparse-arrays
• Solution - sparse-arrays.go

Crush [JavaScript]

• Problem - https://www.hackerrank.com/challenges/crush
• Solution - crush.js

Linked List:

Linked List: Print the Elements [JavaScript]

• Problem - https://www.hackerrank.com/challenges/print-the-elements-of-a-linked-list
• Solution - print-the-elements-of-a-linked-list.js

Linked Lists: Insert element at the tall [JavaScript]

• Problem - https://www.hackerrank.com/challenges/insert-a-node-at-the-tail-of-a-linked-list
• Solution - insert-a-node-at-the-tail-of-a-linked-list.js

Linked List: Inesrt Element at the Head [JavaScript]

• Problem - https://www.hackerrank.com/challenges/insert-a-node-at-the-head-of-a-linked-list
• Solution - insert-a-node-at-the-head-of-a-linked-list.js

Linked List: Insert Element at Specific Position [JavaScript]

• Problem - https://www.hackerrank.com/challenges/insert-a-node-at-a-specific-position-in-a-linked-list
• Solution - insert-a-node-at-a-specific-position-in-a-linked-list.js

Linked List: Delete A Node [JavaScript]

• Problem - https://www.hackerrank.com/challenges/delete-a-node-from-a-linked-list
• Solution - delete-a-node-from-a-linked-list.js

Linked List: Print in reverse [JavaScript]

• Problem - https://www.hackerrank.com/challenges/print-the-elements-of-a-linked-list-in-reverse
• Solution - print-the-elements-of-a-linked-list-in-reverse.js

Linked List: Reverse [JavaScript]

• Problem - https://www.hackerrank.com/challenges/reverse-a-linked-list
• Solution - reverse-a-linked-list.js

Linked List: Compare [JavaScript]

• Problem - https://www.hackerrank.com/challenges/compare-two-linked-lists
• Solution - compare-two-linked-lists.js

Linked List: Merge two sorted Linked List [JavaScript]

• Problem - https://www.hackerrank.com/challenges/merge-two-sorted-linked-lists
• Solution - merge-two-sorted-linked-lists.js

Linked List: Get value at specific position from the tail [JavaScript]

• Problem - https://www.hackerrank.com/challenges/get-the-value-of-the-node-at-a-specific-position-from-the-tail
• Solution get-the-value-of-the-node-at-a-specific-position-from-the-tail.js

Linked List: Delete Duplicated Value from a sorted linked list [JavaScript]

• Problem - https://www.hackerrank.com/challenges/delete-duplicate-value-nodes-from-a-sorted-linked-list
• Solution - delete-duplicate-value-nodes-from-a-sorted-linked-list.js

Linked List: Detect Whether a Linked List Contains a Cycle [C++]

• Problem - https://www.hackerrank.com/challenges/detect-whether-a-linked-list-contains-a-cycle
• Solution - detect-whether-a-linked-list-contains-a-cycle.cpp

Linked List: Find Merge Point [C++]

• Problem - https://www.hackerrank.com/challenges/find-the-merge-point-of-two-joined-linked-lists
• Solution - find-the-merge-point-of-two-joined-linked-lists.cpp

Doubly Linked List:

Doubly Linked List: Insert a Node [JavaScript]

• Problem - https://www.hackerrank.com/challenges/insert-a-node-into-a-sorted-doubly-linked-list
• Solution -insert-a-node-into-a-sorted-doubly-linked-list.js

Doubly Linked List: Reverse [Python]

• Problem - https://www.hackerrank.com/challenges/reverse-a-doubly-linked-list
• Solution - reverse-a-doubly-linked-list.js

Tree:

Tree: Preorder Travelsal [Python]

• Problem - https://www.hackerrank.com/challenges/tree-preorder-traversal
• Solution - tree-preorder-traversal

Tree: Inorder Travelsal [Python]

• Problem - https://www.hackerrank.com/challenges/tree-inorder-traversal
• Solution - tree-inorder-traversal.py

Tree: Height of Binary Tree [Python]

• Problem - https://www.hackerrank.com/challenges/tree-height-of-a-binary-tree
• Solution - tree-height-of-a-binary-tree.py

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Medium

Sparse Arrays [Go]

• Problem - https://www.hackerrank.com/challenges/sparse-arrays
• Solution - sparse-arrays.go

Detect Whether a Linked List Contains a Cycle [C++]

• Problem - https://www.hackerrank.com/challenges/detect-whether-a-linked-list-contains-a-cycle
• Solution - detect-whether-a-linked-list-contains-a-cycle.cpp

Non Divisible Subset [JavaScript]

• Problem - https://www.hackerrank.com/challenges/non-divisible-subset
• Solution - non-divisible-subset.js

Extra Long Factoriqal [Go]

• Problem - https://www.hackerrank.com/challenges/extra-long-factorials
• Solution - extra-long-factorials.go

Forming a Magic Square [JavaScript]

• Problem - https://www.hackerrank.com/challenges/magic-square-forming/problem
• Solution - magic-square-forming.js

Climbing The Leaderboard [JavaSCript]

• Problem - https://www.hackerrank.com/challenges/climbing-the-leaderboard
• Solution - climbing-the-leaderboard.js

Organizing Containers of Balls [Python]

• Problem - https://www.hackerrank.com/challenges/organizing-containers-of-balls/submissions/code/86847139

Organizing Containers of Balls [Python]

• Problem - https://www.hackerrank.com/challenges/organizing-containers-of-balls/problem)
• Solution - organizing-containers-of-balls.py

Encryption [Python]

• Problem - https://www.hackerrank.com/challenges/encryption/problem
• Solution - encryption.py

Queen's Attack II [Python]

• Problem - https://www.hackerrank.com/challenges/queens-attack-2/problem
• Solution - queens-attack-2.py

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Hard

Crush [JavaScript]

• Problem - https://www.hackerrank.com/challenges/crush
• Solution - crush.js