vb公共基础知识（VB common basic knowledge）.docVIP

vb公共基础知识（VB common basic knowledge） The process of computer problem solving is actually the implementation of an algorithm called the computer algorithm. 1., the basic characteristics of the algorithm: feasibility, certainty, poverty, enough information. 2. basic elements of the algorithm: (1) the operation and operation of data in the algorithm An algorithm consists of two basic elements: one is the operation and operation of data objects, and the other is the control structure of the algorithm; two. In general computer systems, the basic operations and operations have the following 4 categories: arithmetic operations, logical operations, relational computing, and data transmission. (2) the control structure of the algorithm: the execution sequence of the operations among the algorithms is called the control structure of the algorithm. The tools used to describe algorithms are usually traditional flowcharts, N-S structured flowcharts, algorithmic description languages, and so on. Generally, an algorithm can be composed of 3 basic control structures, which are sequence, selection, and loop. First, algorithms and data structures (41% in calendar years) 1, algorithm The treatment scheme is correct and complete description of the algorithm called []. The purpose of algorithm analysis is to analyze the efficiency of the algorithm in order to improve it. The basic features of the algorithm are feasibility, certainty, poverty, and sufficient intelligence. The algorithm has poor means: the running time of the algorithm program is limited. The complexity of the algorithm is the measure of the algorithm. The time complexity is divided into [] and [space complexity]. . the time complexity refers to the implementation of the algorithm to calculate workload []; space complexity refers to the storage space required by the process of implementation []. The space complexity of the algorithm is complex or time value of a degree, there is no way to launch another value. 2, data stru