Description
Locate the first transition in written binary text.
Bit positions are usually counted from the least-significant bit, while a displayed binary string has its own left-to-right indexing convention. Masks, fields and parity predicates describe a selected region or pattern; local agreement does not validate a complete encoded record.
Locate the first transition in written binary text.
When to use this tool
Use Bit Word Leading Transition Position when checking the stated mask, field, parity or bit-index convention.
How to use the tool and how it works
- Enter bits. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read hasTransition, transitionIndex. Inspect hasTransition before interpreting the associated values.
Locate the first transition in written binary text. Require nonempty binary string; scan from index one for a character differing from its predecessor, returning hasTransition and transitionIndex or -1.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| bits | Bits | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| hasTransition | Has Transition | Required. Boolean. |
| transitionIndex | Zero-based position from the left end of the binary text; -1 when no transition exists. | Required. Safe integer. |
{
"input": {
"bits": "000110"
},
"output": {
"hasTransition": true,
"transitionIndex": 3
}
}Limitations and assumptions
- Index zero is the leftmost written bit, unlike least-significant numeric indexes; no transition means an all-equal string.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Choose an explicit bit order, word width and missing-position policy; use the complete record format and appropriate parsing or checksum methods for full validation.
References
Similar or alternative tools
- Gray Code Single Transition Bit Index
Check whether two words differ in exactly one bit.
- Bitmap First Excluded Position
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