_{Data and algorithms are among the most important topics for programmers to do a job and do a successful job. A strong knowledge of data structures and algorithms is the foundation of successful code writing. If you know the essential information constructs, such as tablets, strings, linked lists, tree, map, and specialized data structures such as tries and auto-balanced trees, such as AVL trees, you can find out how to use the data structure and measure the processor and memory price. But like every wide SDK program provides it for instance, you do not have to write your own array, linked list or hashable. To be able to access the library in the right place, you would need to understand JDK or C++. We can all learn information systems and algorithms in our schools and universities, but this is scarcially safeguarded.EXPLAIN.}