Find minimum number of coins that make a given value: Difference between revisions
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(→{{header|AppleScript}}: Added a version in AppleScript) |
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one coin of 1 |
one coin of 1 |
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<br><br> |
<br><br> |
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=={{header|AppleScript}}== |
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<lang applescript>----------------- MINIMUM NUMBER OF COINS ---------------- |
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-- change :: [Int] -> Int -> [(Int, Int)] |
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on change(units, n) |
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if {} = units or 0 = n then |
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{} |
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else |
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set x to item 1 of units |
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set q to n div x |
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if 0 = q then |
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change(rest of units, n) |
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else |
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{{q, x}} & change(units, n mod x) |
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end if |
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end if |
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end change |
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--------------------------- TEST ------------------------- |
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on run |
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set coinReport to ¬ |
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showChange({200, 100, 50, 20, 10, 5, 2, 1}) |
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unlines(map(coinReport, {1024, 988})) |
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end run |
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-- showChange :: [Int] -> Int -> String |
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on showChange(units) |
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script |
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on |λ|(n) |
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script go |
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on |λ|(qd) |
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set {q, d} to qd |
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(q as text) & " * " & d as text |
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end |λ| |
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end script |
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unlines({("Summing to " & n as text) & ":"} & ¬ |
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map(go, change(units, n))) & linefeed |
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end |λ| |
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end script |
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end showChange |
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------------------------- GENERIC ------------------------ |
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-- map :: (a -> b) -> [a] -> [b] |
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on map(f, xs) |
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-- The list obtained by applying f |
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-- to each element of xs. |
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tell mReturn(f) |
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set lng to length of xs |
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set lst to {} |
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repeat with i from 1 to lng |
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set end of lst to |λ|(item i of xs, i, xs) |
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end repeat |
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return lst |
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end tell |
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end map |
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-- mReturn :: First-class m => (a -> b) -> m (a -> b) |
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on mReturn(f) |
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-- 2nd class handler function lifted into 1st class script wrapper. |
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if script is class of f then |
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f |
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else |
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script |
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property |λ| : f |
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end script |
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end if |
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end mReturn |
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-- unlines :: [String] -> String |
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on unlines(xs) |
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-- A single string formed by the intercalation |
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-- of a list of strings with the newline character. |
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set {dlm, my text item delimiters} to ¬ |
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{my text item delimiters, linefeed} |
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set s to xs as text |
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set my text item delimiters to dlm |
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s |
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end unlines</lang> |
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{{Out}} |
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<pre>Summing to 1024: |
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5 * 200 |
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1 * 20 |
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2 * 2 |
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Summing to 988: |
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4 * 200 |
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1 * 100 |
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1 * 50 |
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1 * 20 |
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1 * 10 |
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1 * 5 |
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1 * 2 |
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1 * 1</pre> |
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=={{header|F_Sharp|F#}}== |
=={{header|F_Sharp|F#}}== |
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Take 4 of 200 |
Take 4 of 200 |
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</pre> |
</pre> |
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=={{header|Factor}}== |
=={{header|Factor}}== |
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{{works with|Factor|0.99 2021-06-02}} |
{{works with|Factor|0.99 2021-06-02}} |
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