Created
May 4, 2022 02:17
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coins
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| #lang racket | |
| (define coins | |
| (list (cons 25 'quarter) | |
| (cons 10 'dime) | |
| (cons 5 'nickel) | |
| (cons 1 'penny))) | |
| (define (make-change cents) | |
| (if (= cents 0) | |
| '() | |
| (let ([coin (findf (λ (coin-pair) (<= (car coin-pair) cents)) coins)]) | |
| (cons (cdr coin) (make-change(- cents (car coin))))))) |
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