Dubbele Omzetting

Leren

Twee afzonderlijke paren aangrenzende tekens zijn verwisseld.

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)

Zo herkent u het

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

Veelgemaakte fouten

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

Oefenadvies

Foutcontrole