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An <u>algorithm</u> is a set of instructions or operational steps that solves a specific problem within a finite amount of time. It has the following characteristics.
- The problem is well-defined, with clear input and output definitions.
- It is feasible and can be completed within a finite number of steps, time, and memory space.
- It is feasible and can be completed with finite steps, time, and memory.
- Each step has a definite meaning, and under the same input and operating conditions, the output is always the same.
## 1.2.2 &nbsp; Data Structure Definition
A <u>data structure</u> is a way of organizing and storing data, covering the data content, relationships between data, and methods for data operations. It has the following design objectives.
A <u>data structure</u> is a way of organizing and storing data, including the data itself, the relationships between data elements, and the methods used to operate on them. It has the following design objectives.
- Occupy as little space as possible to save computer memory.
- Data operations should be as fast as possible, covering data access, addition, deletion, update, etc.
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It is worth noting that data structures and algorithms are independent of programming languages. For this reason, this book is able to provide implementations based on multiple programming languages.
It is worth noting that data structures and algorithms are independent of programming languages. That is why this book can provide implementations in multiple programming languages.
!!! tip "Conventional abbreviation"