All Permutations
Given a string,the task is to print all the permutations of the string. A permutation is a rearrangement of the elements of an ordered list S.A string of length...
Author: Sreekumar Kj
Sreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about technology, philosophy, society and a bit about physics.
He now runs a conversational AI company - DheeYantra - focusing his efforts to help businesses improve operational efficiency using digital employees powered by AI.
List View using Array Adapters – Part II : Using ListActivity
In the previous post, I showed you how to create a ListView and populate it with elements of a String array. If you can recall, we used a regular activity in th...
List View using Array Adapters – Part I
Often times in your application when you want to list down a bunch of data you’re going to use a List View. It provides a predefined layout that helps create a ...
Content Providers in Android
One of the most striking features of Android is Content Providers. In a sentence, Content Providers consist of a centrally located database in Android that help...
Network Access in Android Applications
In all the earlier posts throughout this tutorial section, we’ve been dealing with standalone applications i.e. ones that require no network access. But with th...
Introducing Android Debug Bridge – Part II
In the part I of this post, I gave you a brief explanation of what ADB is and what is it used for. Although, ADB is a very effective tool and is used in numerou...
Introducing Android Debug Bridge – Part I
Any development work invariably involves the use of terminals. There are many who find the terminal much more fascinating than the GUI. This post is mainly targ...
Path Finding
Given an undirected,unweighted graph and two vertices u and v,the task is to find the path between these two vertices.u can be considered as the source vertex a...
Databases in Android using SQLite – Part III
Till now, we have restricted ourselves to very simple databases and hence we declare and define the database inside the Main Activity itself. However, this is m...
Longest path in a tree
Given an unweighted and undirected tree,the task is to find the length of the longest path (from one node to another) in that tree.The length of a path in this ...