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Datenstruktur korrigiert und vereinfacht.
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Jim Martens
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@ -13,131 +13,105 @@ Abgebende: Jim 2martens, Britta 2noack, Jan-Simon 0giesel
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; Die Rückgabe einer Liste mit dem Buchstaben an erster Stelle und einer
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; Die Rückgabe einer Liste mit dem Buchstaben an erster Stelle und einer
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; Liste als zweitem Element, die wiederum den Schlüssel an erster Stelle
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; Liste als zweitem Element, die wiederum den Schlüssel an erster Stelle
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; enthält, erlaubt ein einfaches Auswerten der Zuordnung.
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; enthält, erlaubt ein einfaches Auswerten der Zuordnung.
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(define (daten char)
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(define buchstabiertafel
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(case (char->integer char)
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'((#\A . Alfa)
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([65] (list char 'Alfa))
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(#\B . Bravo)
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([66] (list char 'Bravo))
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(#\C . Charlie)
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([67] (list char 'Charlie))
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(#\D . Delta)
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([68] (list char 'Delta))
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(#\E . Echo)
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([69] (list char 'Echo))
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(#\F . Foxtrott)
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([70] (list char 'Foxtrott))
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(#\G . Golf)
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([71] (list char 'Golf))
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(#\H . Hotel)
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([72] (list char 'Hotel))
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(#\I . India)
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([73] (list char 'India))
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(#\J . Juliett)
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([74] (list char 'Juliett))
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(#\K . Kilo)
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([75] (list char 'Kilo))
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(#\L . Lima)
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([76] (list char 'Lima))
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(#\M . Mike)
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([77] (list char 'Mike))
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(#\N . November)
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([78] (list char 'November))
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(#\O . Oscar)
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([79] (list char 'Oscar))
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(#\P . Papa)
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([80] (list char 'Papa))
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(#\Q . Quebec)
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([81] (list char 'Quebec))
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(#\R . Romeo)
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([82] (list char 'Romeo))
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(#\S . Sierra)
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([83] (list char 'Sierra))
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(#\T . Tango)
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([84] (list char 'Tango))
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(#\U . Uniform)
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([85] (list char 'Uniform))
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(#\V . Viktor)
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([86] (list char 'Viktor))
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(#\W . Whiskey)
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([87] (list char 'Whiskey))
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(#\X . X-ray)
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([88] (list char 'X-ray))
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(#\Y . Yankee)
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([89] (list char 'Yankee))
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(#\Z . Zulu)
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([90] (list char 'Zulu))
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(#\0 . Nadazero)
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([48] (list char 'Nadazero))
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(#\1 . Unaone)
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([49] (list char 'Unaone))
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(#\2 . Bissotwo)
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([50] (list char 'Bissotwo))
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(#\3 . Terrathree)
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([51] (list char 'Terrathree))
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(#\4 . Kartefour)
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([52] (list char 'Kartefour))
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(#\5 . Pantafive)
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([53] (list char 'Pantafive))
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(#\6 . Sosisix)
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([54] (list char 'Sosisix))
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(#\7 . Setteseven)
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([55] (list char 'Setteseven))
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(#\8 . Oktoeight)
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([56] (list char 'Oktoeight))
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(#\9 . Novenine)
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([57] (list char 'Novenine))
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(#\, . Decimal)
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([44] (list char 'Decimal))
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(#\. . Stop)
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([46] (list char 'Stop))
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))
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)
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)
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; 1.2
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; 1.2
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(define (char->schlüssel char)
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(define (char->schlüssel char tafel)
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(car (cdr (daten char))))
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(cdr (assoc (char->upper char) tafel)))
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; 1.3
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; 1.3
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(define char_to_upperCase (λ (myChar)
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(define (char->upper char)
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; x als ASCII Wert für myChar definieren
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(let ([charInt (char->integer char)])
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(define x (char->integer myChar))
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(cond ([<= 96 charInt 122] (integer->char (- charInt 32)))
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; y als x-32 definieren
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([<= 65 charInt 90] (integer->char charInt))
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(define y (- x 32))
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(else char))))
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; wenn x < 91 (bereits upperCase) myChar direkt zurückgeben
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(if (< x 91)
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; wenn myChar bereits upperCase ist, direkt zurückgeben
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myChar
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; andernfalls wird y zurückgegeben
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(when (> x 96)
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; y stellt den gleichen Buchstaben wie x dar, bloß in upperCase
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; daher wird y zurückgegeben
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(integer->char y)))))
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; 1.4
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; 1.4
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(define (buchstabiere text)
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(define (buchstabiere text tafel)
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(let ([xs (string->list text)])
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(letrec ((rec (λ (xs)
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(if [empty? xs]
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(if (null? xs)
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'()
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null
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(cons (char->schlüssel (char_to_upperCase(car xs))) (buchstabiere (list->string (cdr xs))))
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(cons (char->schlüssel (car xs) tafel)
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)
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(rec (cdr xs)))))))
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))
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(rec (string->list text))))
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(require se3-bib/flaggen-module)
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(require se3-bib/flaggen-module)
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; 2.1
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; 2.1
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; Analoger Entwurf wie bei 1.1, diesmal mit den Flaggen.
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; Analoger Entwurf wie bei 1.1, diesmal mit den Flaggen.
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(define (flaggenData char)
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(define flaggentafel
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(case (char->integer char)
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`((#\A . ,A)
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([65] (list char A))
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(#\B . ,B)
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([66] (list char B))
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(#\C . ,C)
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([67] (list char C))
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(#\D . ,D)
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([68] (list char D))
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(#\E . ,E)
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([69] (list char E))
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(#\F . ,F)
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([70] (list char F))
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(#\G . ,G)
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([71] (list char G))
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(#\H . ,H)
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([72] (list char H))
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(#\I . ,I)
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([73] (list char I))
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(#\J . ,J)
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([74] (list char J))
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(#\K . ,K)
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([75] (list char K))
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(#\L . ,L)
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([76] (list char L))
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(#\M . ,M)
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([77] (list char M))
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(#\N . ,N)
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([78] (list char N))
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(#\O . ,O)
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([79] (list char O))
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(#\P . ,P)
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([80] (list char P))
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(#\Q . ,Q)
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([81] (list char Q))
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(#\R . ,R)
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([82] (list char R))
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(#\S . ,S)
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([83] (list char S))
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(#\T . ,T)
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([84] (list char T))
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(#\U . ,U)
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([85] (list char U))
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(#\V . ,V)
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([86] (list char V))
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(#\W . ,W)
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([87] (list char W))
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(#\X . ,X)
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([88] (list char X))
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(#\Y . ,Y)
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([89] (list char Y))
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(#\Z . ,Z)
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([90] (list char Z))
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(#\0 . ,Z0)
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([48] (list char Z0))
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(#\1 . ,Z1)
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([49] (list char Z1))
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(#\2 . ,Z2)
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([50] (list char Z2))
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(#\3 . ,Z3)
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([51] (list char Z3))
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(#\4 . ,Z4)
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([52] (list char Z4))
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(#\5 . ,Z5)
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([53] (list char Z5))
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(#\6 . ,Z6)
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([54] (list char Z6))
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(#\7 . ,Z7)
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([55] (list char Z7))
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(#\8 . ,Z8)
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([56] (list char Z8))
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(#\9 . ,Z9)
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([57] (list char Z9))
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)
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)
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; 2.2
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(define (char->flagge char)
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(car (cdr (flaggenData char))))
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; 2.3
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(define (buchstabiereFlagge text)
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(let ([xs (string->list text)])
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(if [empty? xs]
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'()
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(cons (char->flagge (char_to_upperCase(car xs))) (buchstabiereFlagge (list->string (cdr xs))))
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)
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))
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))
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