Data processing method and device

The invention provides a data processing method and device. The method includes the steps of dividing each number into a first section and a second section, and dividing all numbers according to the first sections to obtain a number set corresponding to the first sections, wherein the first sections of all the numbers in each number set are the same; for the first sections corresponding to each number set, storing the first sections to obtain a section domain, and establishing an array corresponding to the first sections; for all the first sections in the section domain, storing the second sections of the numbers in the number set corresponding to the first sections into a target array unit in the array corresponding to the first sections to obtain a number domain corresponding to the first sections, wherein the identification of the target array unit is the same as that of the second sections. By means of the scheme, number inquiry can be rapid and accurate, and the method is effectively suitable for large-s