012345

012345 is a six-character string consisting of the digits 0 through 5 in ascending order. It is commonly used as a simple example sequence in teaching, testing, and data formatting because it contains a variety of digit characters in a compact form.

In programming, the leading zero makes 012345 notable in languages that treat numbers with a leading zero as octal literals. In such contexts, the sequence would be interpreted as an octal number rather than decimal, with a decimal value of 5349. Some modern languages avoid this ambiguity by disallowing leading zeros for decimal literals or by requiring an explicit base prefix (for example, 0o in Python). If treated as a plain string rather than a number, 012345 is simply six characters that can be used to test string handling, length measurement, or character encoding.

In data formats and software testing, 012345 serves as a straightforward, non-redundant example for fixed-width field handling, zero padding, or input validation. It can help verify that systems preserve leading zeros or correctly tokenize numeric-like strings.

Numerically, if the sequence is read as a decimal number with an omitted leading zero, it corresponds to 12345. As an octal literal in certain contexts, it represents 5349 in decimal. The term 012345 does not denote a specific standard, but rather a basic digit sequence often used for illustrative and testing purposes in computing and documentation.