'Cdr lst' diaporamas de présentation

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Algorithms & Data Structures

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Algorithms & Data Structures

Algorithms & Data Structures. Lists Append vs. append!, reverse vs. reverse!, folding, … List accessors: list-ref, list-tail, list-head, … Sort & merge Trees ADT for trees Tree-fold, subst Compression via Huffman coding. Lists: Constructors, Selectors, Operations.

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Processing Symbolic Data

Processing Symbolic Data. More Standard Functions. Some more useful functions and predicates (symbolp s ) T for atomic symbol s s (numberp s ) T for numbers s (consp s ) T for cons value s ( i.e . it has car a nd cdr) (listp s ) T for list s ( maybe empty ) Selectors/accessors

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Lecture 9 Lists continued: Map, Filter, Accumulate , Lists as interfaces

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Lecture #7

Lecture #7. 90-92, 2.1.3 99-103, 2.2.1 105-107, 2.2.1 107-112, 2.2.2. How can we implement pairs ?. ( define (cons x y) (lambda (m) (cond ((= m 0) x) ((= m 1) y) (else (error "Argument not 0 or 1 -- CONS" m)))))).

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David Evans cs.virginia/evans

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