Data structure is method of storing, managing and organizing data into computer memory in such a way that program at runtime can easily access and process the data effectively.
Like in old days think about telephone diary or Dictionary where data is organized in such a way that anyone can get the records, words were organized and sorted alphabetically, also index were present in start of book to guide person how fast they can directly go to that page what they are looking for.
Same way in computer world since data is huge so there are so many methods are available to access and process data which is classified under Data structure and Algorithm.
Data structure algorithms are written under various language like C, C++, JAVA and Python etc. to help programmer to write efficient program. these language provide ready to use template which is called as Abstract Data Type (ADT) which can be used by programmer to write code like Linked-List, Array etc.
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