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This article introduces the relevant knowledge of "what are the principles for the entry and exit of stack data". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The entry and exit principle of stack data is first in and out, in which stack is a data structure, which stores data according to the principle of first in and then out. The first data is pressed into the bottom of the stack, and the last data is at the top of the stack. When you need to read the data, you start to pop up the data from the top of the stack.

Operating environment of this article: windows7 system, DELL G3 computer

What is the principle of getting in and out of stack data?

The entry and exit principle of stack data is first in, then out.

The principle of stack

The stack is automatically allocated and released by the operating system, storing the parameter values of the function, a value of a local variable, and so on. It operates in a manner similar to the stack in the data structure.

The heap is generally allocated and released by the programmer, and if the programmer does not release it, the program may be reclaimed by OS at the end of the program. Note that it is different from the heap in the data structure, but the allocation method is similar to the linked list.

The characteristics of the stack: the stack is a data structure, which stores data according to the principle of first in and then out. The first data is pressed into the bottom of the stack, and the last data is at the top of the stack. When you need to read the data, you start to pop up the data from the top of the stack (the last data is read out first).

A stack is a special linear table that can only be inserted and deleted at one end. Accumulate items in buckets, press the ones that come in first, and then pile them one by one. When you take it away, you can only take it one by one from above. Heap and fetch are carried out at the top, and the bottom is generally motionless.

Stack is a kind of data structure similar to bucket stacking items, one end of which is deleted and inserted, and the other is called the bottom of the stack. Insertion is generally called PUSH, while deletion is called POP. Stack is also called last-in-first-out table (LIFO table)

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