COMPUTER-READABLE RECORDING MEDIUM STORING INFORMATION PROCESSING PROGRAM, INFORMATION PROCESSING METHOD, AND INFORMATION PROCESSING APPARATUS

For managing an order of pieces of data, a computer stores, in order, a plurality of pieces of value data that represent a number of digits with which a constant multiple of a number of pieces of data included in a data group are representable; stores flag defining an upper-lower relationship between first and second ranges in each of which at least the number of pieces of data is representable; each time designation of first value data to be moved to a head in the order is accepted, sets a value that belongs to an upper range among the first and the second ranges to the first value data such that the first value data is before other pieces of value data in the order; and when the lower range no longer includes any pieces of value data, updates the flag such that the upper-lower relationship is switched.