cs330_f2016:racketbasics
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cs330_f2016:racketbasics [2018/01/11 20:13] morse [Preparation:] |
cs330_f2016:racketbasics [2021/06/30 23:42] |
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| - | ====Objective:==== | ||
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| - | Learn the basics of the Racket Language and functional programming in general. | ||
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| - | ---- | ||
| - | |||
| - | ====Preparation:==== | ||
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| - | Download the latest version of DrRacket from [[http://racket-lang.org]] and install it on your computer. Versions are available for Windows, Mac OS X, and Linux. | ||
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| - | Please also take a look at [[cs330_f2016:turnin|how to turn in your assignments]]. | ||
| - | |||
| - | ---- | ||
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| - | ====Deliverables:==== | ||
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| - | For this lab, you will need to implement the following functions and data structures in Racket: | ||
| - | * ''sum-coins'' | ||
| - | * ''degrees-to-radians'' | ||
| - | * ''sign'' | ||
| - | * ''new-sin'' | ||
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| - | === sum-coins === | ||
| - | <code racket> | ||
| - | (define (sum-coins pennies nickels dimes quarters) ...) | ||
| - | </code> | ||
| - | where ''pennies'', ''nickels'', ''dimes'', and ''quarters'' are all non-negative numbers and the value returned is the total value of the coins in cents. | ||
| - | |||
| - | === degrees-to-radians === | ||
| - | <code racket> | ||
| - | (define (degrees-to-radians angle) ...) | ||
| - | </code> | ||
| - | where ''angle'' is a number representing a value represented in degrees and the value returned is the equivalent representation in radians. (For those who have forgotten their trig: radians = degrees / 180 * PI.) | ||
| - | |||
| - | === sign === | ||
| - | <code racket> | ||
| - | (define (sign x) ...) | ||
| - | </code> | ||
| - | where ''x'' is a number and the value returned is -1, 0, or 1 depending on whether ''x'' is negative, zero, or positive respectively. | ||
| - | |||
| - | === new-sin === | ||
| - | <code racket> | ||
| - | (define (new-sin angle type) ...) | ||
| - | </code> | ||
| - | where ''angle'' is a number representing either degrees or radians, type is either '''degrees'' or '''radians'' (a symbol) indicating how ''angle'' is represented, and the value returned is the sin of ''angle''. | ||
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| - | Hint: use ''symbol=?'' to test for symbol equality: ''(symbol=? x 'degrees)''. | ||
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| - | ---- | ||
| - | ====Notes:==== | ||
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| - | You **do not** need to bulletproof the code to enforce proper inputs. | ||
| - | Your code only needs to return correct values given correct inputs. | ||
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| - | ---- | ||
| - | |||
| - | ====Hints:==== | ||
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| - | Try clicking on the Step button to walk through your code and watch the equivalent sequence of substitutions that are performed. | ||
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cs330_f2016/racketbasics.txt ยท Last modified: 2021/06/30 23:42 (external edit)
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