Minimal Repeating String Period
Bounded UTF-16 string minimal repeating string period; exact code-unit matching, no Unicode normalization or grapheme inference.
Description
Bounded UTF-16 string minimal repeating string period; exact code-unit matching, no Unicode normalization or grapheme inference.
A whole-string repeating period must tile the string exactly. This differs from periods allowing a partial final repetition.
When to use this tool
Bounded UTF-16 string minimal repeating string period; exact code-unit matching, no Unicode normalization or grapheme inference.
- Prepare the supplied text fields for this operation.
- Compare the complete example with the representation used by your own input before carrying the result into another step.
How to use the tool and how it works
- Enter text. Use the exact text syntax, units and index conventions explained below.
- Run the tool. If input validation fails, correct the supplied fields before interpreting any result.
- Read result.period. Interpret false, null and empty lists using the distinctions below; they can be valid outputs.
Try positive divisors of text length and return the first whose prefix repeated the required number of times reproduces text. Empty text returns period zero.1
| Input field | Meaning and representation | Accepted input |
|---|---|---|
| text | text. | Text; at most 8,192 UTF-16 code units, subject to the grammar above |
| Output field | Interpretation |
|---|---|
| result | Object containing the named outputs below. |
| result.period | The period value under the stated formula or text convention. |
{
"input": {
"text": "ababab"
},
"output": {
"result": {
"period": 2
}
}
}Limitations and assumptions
- The nonempty fallback is the whole length. Comparisons are literal UTF-16 code units, not graphemes or approximate matches.
- The string-analysis source text is bounded to 128 UTF-16 code units; offsets and lengths use those code units.
- All declared input fields are required and unexpected top-level fields are rejected. Numbers must be finite; lists are limited to 128 entries and ordinary text fields to 8,192 UTF-16 code units, with tighter limits where stated.
- JSON text inputs must parse within bounded nesting and size limits. Numeric outputs outside the safe finite range are rejected; large exact integer results use decimal strings. Indexes and half-open spans are zero-based unless a rank is explicitly described as one-based.
Alternative or Complementary methods
Use a code-point or grapheme-aware text method when the task concerns user-perceived characters. These bounded literal operations retain case and code-unit structure rather than normalizing linguistic text.
References
Similar or alternative tools
- String Repetition Factor from Period
Bounded UTF-16 string string repetition factor from period; exact code-unit matching, no Unicode normalization or grapheme inference.
- Run Period Alignment Audit
Audit exact code-unit run boundaries against an explicit periodic grid and origin; text length itself is not an additional run boundary.