Gene sequencing quality line data compression pre-processing and decompression and restoration methods, and system

A method of gene sequencing quality line data decompression and restoration, wherein the implementation steps comprise:

• S1) reading decompressed index column data (Index_Data), regrouped data (Grouped_Data) and index column numbers (Index_No), determining a number of the quality line of an original data block (Data) and character data of each line based on the regrouped data (Grouped_Data) and index column number (Index_No), and allocating a space for storage of the original data block (Data);
• S2) according to the index column numbers (Index_No), respectively assigning each column of data among the index column data (Index_Data) to the corresponding column, the number of which is recorded by Index_No, in the original data block (Data);
• S3) establishing an index information table (IIT) according to the index column data (Index_Data)
• S4) sequentially scanning each line of data among the regrouped data (Grouped_Data) according to the index information table (IIT), determining a position of the line in the original data block according to the index information table (ITT) and the index column data (Index_Data), and writing the same into the corresponding quality line of the original data block (Data);
• S5) exporting the original data block (Data).