Topic: To relieve the person from BigData by means of 5 lines of the code
Subject a bit cheerful, on it not in algorithms. Particulars: https://habrahabr.ru/post/324772/it is short. It is necessary for the person ID-shki in format XX000000, where XX - two letters of the Latin alphabet, 0 - number from 0 to 9. A principal condition - that damned competitors could not ID calculate under number how many all clients in basis. Competitors can do records on purpose to receive n ID, going successively. For the person the task seemed mega-difficult, what even it was necessary to attract this terrible BigData which neither the friend nor the enemy in the person does not know. I.e. sorted out all possible variants, mixed, saved in one big = on 20 and then long optimized basis quickly to select these ID. How by means of the genius of engineering thought and 5-10 lines on the pseudocode to relieve the person from big and BigData?