Διπλή Αντιμετάθεση

Μάθηση

Δύο ξεχωριστά ζεύγη γειτονικών χαρακτήρων έχουν αντιμεταθεί.

Double transposition errors occur when two separate pairs of adjacent characters are swapped in the same string. This creates a more complex error pattern that can be harder to detect because the errors are distributed across the string.

Original: ABCDEF → Error: BADCEF (AB swapped AND CD swapped)

• 123456 → 213465 (12 swapped AND 45 swapped)
• ABCDEF → BACDEF → BADCEF (two transpositions)
• AB-1234 → BA-1324 (AB swapped AND 23 swapped)

Πώς να το αναγνωρίζετε

• Two separate pairs of adjacent characters are reversed
• Length remains the same
• All original characters are present

Συνηθισμένα λάθη

• Missing one of the two transpositions
• Confusing with single transposition
• Not scanning the entire string

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