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C00002 00002 .CENT(Problems involving list-notation)
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.CENT(Problems involving list-notation)
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.BEGIN CENTERIT;SELECT 1;
.GROUP
.P65:
I Translate the following lists into Sexpr dotted-pair notation.
←%21.%3 (A B C) %22.%3 (A) %23.%3 ((A)) %24.%3 (A (B (C))) %25.%3 (NIL).
.APART
.GROUP
%1
Now go the other way and translate the following sexprs into list notation.
←%25.%3 ((A .(B . NIL)).((C . NIL). NIL)) %26.%3 (NIL . NIL)
←%27.%3 (CONS .((QUOTE .(A . NIL)). NIL))
.APART
.GROUP
%1
II Evaluate the following, writing the results in list notation where possible.
←%21.%3 car[(A B)] %22.%3 cdr[(A B)] %23.%3 cons[A;(B C)] %24.%3 cons[A;NIL]
←%25.%3 cons[eq[A;A];(A B C)] %26.%3 cadr[(A B)]
.APART
.END