java-hackerRank

solutions to HackerRank

Interview - Data Structures

Linked List

• Linked List: Detect Cycles

Stack

• Stacks: Balanced Brackets

Queue

• Queues: A Tale of Two Stacks

Tree

• Trees: Is This a BST?

Array

• Arrays: Left Rotation

Hash Table

• Hash Tables: Ransom Note

String

• Strings: Making Anagram

Tries

• Tries: Search Contacts

Interview - Math

Prime

• Time Complexity: Primality

Bit

• Bit Manipulation: Lonely Integer

Interview - Algorithms

Sort

• Bubble Sort
• Sorting: Comparator

DFS

• DFS: Connected Cell in a Grid

BFS

• BFS: Shortest Reach in a Graph

Binary Search

• Binary Search: Ice Cream Parlor