Algoritmos Myers Diff y LCS7 min de lecturaActualizado el
Algoritmos de comparación de texto y código: Guía de Myers Diff y LCS
Explore las matemáticas de la comparación de diferencias, alterne entre vistas dividida y unificada, y revise cambios de código de forma segura.
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Puntos clave
- El algoritmo de Myers encuentra la ruta de edición más corta mediante búsqueda en grafos con complejidad O(ND).
- La comparación a nivel de caracteres resalta los cambios exactos dentro de cada línea modificada.
- La vista dividida es ideal para análisis estructurales, mientras que la unificada refleja el formato estándar de Git Patch.
- La ejecución local evita que fragmentos de código confidencial se guarden en registros de servicios de terceros.
100% In-Browser & Local Execution
Comparar diferencias de código y texto
Inspeccione cambios línea por línea y palabra por palabra con resaltado sintáctico y detección precisa de modificaciones.
- Myers Diff algorithm
- Split & unified views
- Character-level highlighting
- Whitespace toggle
01.The Myers Diff Algorithm & Shortest Edit Script
Published by Eugene W. Myers in 1986, the Myers Diff algorithm finds the minimum number of insertions and deletions (the Shortest Edit Script) required to transform string A into string B. By modeling text comparison as a directed acyclic graph (edit graph) on a 2D grid, the algorithm executes an O(ND) search where N is the total length and D is the edit distance.
02.Split Side-by-Side vs. Unified Diff Visualization
Split view places original and modified files in parallel columns, synchronizing scroll positions for structural comparisons. Unified view interleaves additions (+) and deletions (-) in a single column, which is the standard format used by Git patches (git diff).
How to Compare Code and Text Revisions
Step-by-step instructions to inspect code diffs.
1
Paste Original Text
Paste the original source code or text into the left editor pane.
2
Paste Modified Text
Paste the updated revision into the right editor pane.
3
Toggle Diff View
Switch between Split (side-by-side) and Unified view modes depending on your preference.
4
Review Character Highlights
Inspect colored red (deleted) and green (added) inline highlights.
Frequently Asked Questions
No. The Myers diff algorithm executes 100% locally in your browser memory.