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Monthly Archive: October 2015


Binary tree traversal

Problem description : Tree traversal (a.k.a tree search) is a form of graph traversal and refers to the process of visiting each node in a tree data structure, exactly once, in a systematic way....

Implement a stack using javascript 0

Implement a stack using javascript

Problem description : Create a stack data structure in javascript. Stack organizes data into the sequential order. It similar to the stack of books in a library or stack of dishes in the kitchen...


Reverse a singly linked list

Problem description : Write a function to reverse a singly linked list. Input : A linked list Output : A linked list Logic : Iterate through linked list with three-pointers previous, current, next. While...


Closest pair of numbers

Problem description : Given a list of unsorted integers, find the pair of elements that have the smallest absolute difference between them? If there are multiple pairs, find them all and return them in...