Parsing/RPN calculator algorithm: Difference between revisions
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Thundergnat (talk | contribs) m (→Classically-oriented version: Remove vanity tags) |
(Added Bracmat solution) |
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+ : 3.00012 |
+ : 3.00012 |
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</pre> |
</pre> |
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=={{header|Bracmat}}== |
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<lang bracmat>( ( show |
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= line a |
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. \n:?line |
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& whl |
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' (!arg:%?a ?arg&!a " " !line:?line) |
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& put$(str$!line) |
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) |
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& :?stack |
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& map |
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$ ( ( |
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= a b |
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. show$(!arg !stack) |
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& ( !arg |
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: ( "+" |
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| "-" |
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| "*" |
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| "/" |
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| "^" |
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) |
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& !stack:%?a %?b ?stack |
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& ( !arg:"+"&!a+!b |
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| !arg:"-"&-1*!a+!b |
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| !arg:"*"&!a*!b |
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| !arg:"/"&!a*!b^-1 |
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| !a^!b |
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) |
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| !arg |
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) |
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!stack |
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: ?stack |
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) |
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. vap$((=.!arg).get'(,STR)." ") |
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) |
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& out$!stack |
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)</lang> |
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Input from keyboard: |
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<pre>3 4 2 * 1 5 - 2 3 ^ ^ / +</pre> |
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Output: |
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<pre>3 |
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3 4 |
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3 4 2 |
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3 4 2 * |
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3 8 1 |
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3 8 1 5 |
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3 8 1 5 - |
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3 8 -4 2 |
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3 8 -4 2 3 |
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3 8 -4 2 3 ^ |
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3 8 -4 9 ^ |
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3 8 1/6561 / |
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3 1/52488 + |
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157465/52488 |
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{!} 157465/52488</pre> |
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=={{header|C}}== |
=={{header|C}}== |
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