I. Definition and function of decimal sequence table
1. Definition: Decimal order table refers to a data structure in which one or more groups of data are arranged according to the size of decimal parts, in which data with large decimal parts are ranked first, data with small decimal parts are ranked last, and the positions of the same integer parts remain unchanged.
2. Function: Decimal sequence table is mainly used to find and sort data, which is widely used in computer science, especially for comparing and sorting real numbers.
Second, the implementation method of decimal sequence table
1, the basic idea: the decimal part is converted into an integer part for comparison, which is called weight coding.
2. Realization method: Decimal sequence table can be realized by using bucket sorting algorithm, and the data to be sorted can be stored in the corresponding bucket; Quickly sort the data in each bucket.
3. Take out the sorted data in turn and put them into an array, and rearrange them according to the size order of decimal parts; Finally, the ordered array is output.
Third, the application of decimal sequence table
Index in 1. database: For data items that need to be searched according to decimal parts, the decimal order table can be used to establish an index to improve the query efficiency.
2. Financial field: Decimal sequence table also has important applications in the calculation of bank interest rate and the law of stock rise and fall.
3. Big data processing: In large-scale data processing, decimal sequence table can be used for sorting, searching and some data mining algorithms.