Post by ruhaimaromana22 on Nov 9, 2024 23:22:01 GMT -5
Developers often have to deal with data structures when performing various tasks: creating from scratch or using ready-made ones. There are different types of such structures, but in work the 7 most popular are most often encountered.
What are data structures
A data structure is a method of organizing social media marketing service information for more efficient use. In development, a structure is also understood as a set of data related in a specific way.
The structure is usually handled like this: data is added, extracted and processed, structured and analyzed. There are specific algorithms for interacting with each structure. The programmer's task is to correctly apply a ready-made algorithm or write a new one.
The main feature of structures is that any data unit must be placed in a specific place where it can be easily found. How this place is formed and how it is searched for depends on the type of structure.
Classification of basic data structures
Array
One of the most popular and easy-to-use structures. Most other structures are based on arrays. In simple terms, an array is a table. Each of its elements has an index, by which you can then extract the necessary data.
Arrays are divided into two types: one-dimensional - all elements have only one index, and multidimensional - each element has several indexes. Information in the array can be viewed, filtered and changed.
Dynamic array
In a dynamic array, the size of indexes can change, unlike the previous structure. When developing it, the maximum size and number of filled elements are set. You can add as many elements as you want without restrictions. But if you include them in the middle, then the others will need to be shifted, which usually takes a lot of time. Therefore, it is recommended to add elements at the very end.
Linked list
This structure is used to develop other structures, as in the case of an array. Simply put, it is a group of nodes that contain data, a pointer or reference to the next or previous node. As a result, a list is formed that contains a specific sequence of elements. At the same time, these elements are more scattered than in the standard version, since they are stored separately. However, pointers allow you to instantly move between elements in the list.
Stack
This structure allows insertion and removal of elements only from the beginning of the list. It operates on the LIFO principle: the last element inserted into the stack must be the first to go.
Queue
It is a series of data, like a stack. But it is based on a different principle, FIFO: data is inserted at the end and extracted from the beginning. But there are also double-ended queues, in which you can transform elements from both the beginning and the end of the structure. Elements located in the middle are not accessible.
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A multitude
In this type of structure, information is not ordered, stored in a group, it is impossible to organize and sometimes it is impossible to sort. But it can be used as a classic mathematical set: to combine, to look for intersections, to calculate the difference.
Map
This structure is also called an associative array or dictionary. The data is in a key/value pair, all keys are unique, but the values are sometimes repeated. Therefore, each unique key always has a specific value.
If you want to get free training, develop domestic programs with artificial intelligence for famous organizations together with the team, then you should take part in our project " Digital Breakthrough. Season: Artificial Intelligence ".
What are data structures
A data structure is a method of organizing social media marketing service information for more efficient use. In development, a structure is also understood as a set of data related in a specific way.
The structure is usually handled like this: data is added, extracted and processed, structured and analyzed. There are specific algorithms for interacting with each structure. The programmer's task is to correctly apply a ready-made algorithm or write a new one.
The main feature of structures is that any data unit must be placed in a specific place where it can be easily found. How this place is formed and how it is searched for depends on the type of structure.
Classification of basic data structures
Array
One of the most popular and easy-to-use structures. Most other structures are based on arrays. In simple terms, an array is a table. Each of its elements has an index, by which you can then extract the necessary data.
Arrays are divided into two types: one-dimensional - all elements have only one index, and multidimensional - each element has several indexes. Information in the array can be viewed, filtered and changed.
Dynamic array
In a dynamic array, the size of indexes can change, unlike the previous structure. When developing it, the maximum size and number of filled elements are set. You can add as many elements as you want without restrictions. But if you include them in the middle, then the others will need to be shifted, which usually takes a lot of time. Therefore, it is recommended to add elements at the very end.
Linked list
This structure is used to develop other structures, as in the case of an array. Simply put, it is a group of nodes that contain data, a pointer or reference to the next or previous node. As a result, a list is formed that contains a specific sequence of elements. At the same time, these elements are more scattered than in the standard version, since they are stored separately. However, pointers allow you to instantly move between elements in the list.
Stack
This structure allows insertion and removal of elements only from the beginning of the list. It operates on the LIFO principle: the last element inserted into the stack must be the first to go.
Queue
It is a series of data, like a stack. But it is based on a different principle, FIFO: data is inserted at the end and extracted from the beginning. But there are also double-ended queues, in which you can transform elements from both the beginning and the end of the structure. Elements located in the middle are not accessible.
Take online courses for free
and discover new opportunities
Start studying
A multitude
In this type of structure, information is not ordered, stored in a group, it is impossible to organize and sometimes it is impossible to sort. But it can be used as a classic mathematical set: to combine, to look for intersections, to calculate the difference.
Map
This structure is also called an associative array or dictionary. The data is in a key/value pair, all keys are unique, but the values are sometimes repeated. Therefore, each unique key always has a specific value.
If you want to get free training, develop domestic programs with artificial intelligence for famous organizations together with the team, then you should take part in our project " Digital Breakthrough. Season: Artificial Intelligence ".