Counting sort initialization of the output array, each take time. Therefore, the time for the whole algorithm is the sum of the times for these steps, . Because it uses arrays of length and , the total space usage of the algorithm is also . For problem instances in which the maximum key value is significantly smaller than the number of items, counting sort can be highly space-efficient, as the only storage it uses other than its input and output arrays is the Count array which uses space . If each item to be sorted is itself an integer, and used as
International Bank Account Number source code of the verification algorithm. An English language IBAN checker for ECBS member country bank accounts is available on its website. An IBAN is validated by converting it into an integer and performing a basic "mod-97" operation (as described in ISO 7064) on it. If the IBAN is valid, the remainder equals 1. The algorithm of IBAN validation is as follows: If the remainder is 1, the check digit test is passed and the IBAN might be valid. Example (fictitious United Kingdom bank, sort code 12-34-56, account number 98765432): According to the ECBS "generation of the IBAN SA1280000119608010928677 shall