In Programming many times we have to store and work with the data. But choosing the right way of storing is important.
Array is one of the most simple and effective way of storing list of data.Now we have to multiple array of data. Ohh! that sounds easy we can use 2 Dimensional Array.
I agree 2 Dimensional array is suitable but I have arrays of variable lengths. So simply creating 2-D Array will not be efficient because I have to specify the column size as the highest of my arrays. So there will be lot of unused space.
The good solution can be Dynamic 2D Array with variable columns. Also Array of vectors can also be used. But we are not discussing about STL.
Algorithm:
- Create a ptr to ptr to ptr with the name of your 2D Array to hold the Array of Pointers.
- Now create an Array of pointers depending on the no of rows and store the base address on the ptr to ptr.
- For every Row allocate the required memory and store the address in the array of pointers.
- You own the 2D Dynamic Array with Dynamic Rows and Columns.
Implementation:
I have done it in c++. But your choice may vary.
You can play with this list at your own choice..
Popular posts from this blog
Important : Here we compared Wordpress.com and not Wordpress.org Introduction: First speaking of blogger. It was developed in Pyra labs then later acquired by Internet giant Google. This is completely free blogging platform written in Python. It integrates with most of google services. I am using blogger for the past two years. It is very compact and comfortable. After speaking about Wordpress. It is developed by Automattic,Inc powered by opensource CMS(Content Management System) Wordpress written in php. It has very fine features such as landing page, sliders, etc. This is also a free platform but you have an option to get premium service too. I think this intro is good enough. Now let compare their features. Blogger Features: Just one google account is good enough to do anything. Integrates into your Gdrive, Photos,Google+. E-mail feeds are very easy to setup with Google owned Feed Burner service. Simplified user interface. ...
This guide is to recover your pen drive from shortcut into files. Sometimes when you plug in your pendrive the contents inside your pendrive apperars to be shortcut. This is caused due a virus which cannot be fixed by your antivirus programs. Be cool it is easy to fix and your files are safe. Important don't delete those shortcut items. 1.Just find the drive letter assigned to your pen drive.(shown in windows explorer,eg: e: or f: etc) 2.Now open command prompt.(start->run->type cmd) 3.Type attirib -h -r -s /s /d x:\*.* Where x denotes your drive letter. Replace x with appropriate drive letter. 4.Press enter. Now your shortcuts will be turned into files. For any queries please comment below.
|
Comments
Post a Comment