Arithmetic evaluation: Difference between revisions
Content added Content deleted
m (→{{header|Sidef}}: updated code) |
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func operate(s, op) { |
func operate(s, op) { |
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s.split(op).map{|c| c |
s.split(op).map{|c| Number(c) }.reduce(op) |
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} |
} |
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func add(s) { |
func add(s) { |
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operate(s.sub(/^\+/,'').sub(/\++/,'+'), '+') |
operate(s.sub(/^\+/,'').sub(/\++/,'+'), '+') |
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} |
} |
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func subtract(s) { |
func subtract(s) { |
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s.gsub!(/(\+-|-\+)/,'-') |
s.gsub!(/(\+-|-\+)/,'-') |
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if (s ~~ /--/) { |
if (s ~~ /--/) { |
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return(add(s.sub(/--/,'+'))) |
return(add(s.sub(/--/,'+'))) |
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} |
} |
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var b = s.split('-') |
var b = s.split('-') |
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b.len == 3 ? (-1*b[1] |
b.len == 3 ? (-1*Number(b[1]) - Number(b[2])) |
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: operate(s, '-') |
: operate(s, '-') |
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} |
} |
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s.gsub!(/[()]/,'').gsub!(/-\+/, '-') |
s.gsub!(/[()]/,'').gsub!(/-\+/, '-') |
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var reM = /\*/ |
var reM = /\*/ |
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var reMD = %r"(\d+\.?\d*\s*[*/]\s*[+-]?\d+\.?\d*)" |
var reMD = %r"(\d+\.?\d*\s*[*/]\s*[+-]?\d+\.?\d*)" |
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var reA = /\d\+/ |
var reA = /\d\+/ |
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var reAS = /(-?\d+\.?\d*\s*[+-]\s*[+-]?\d+\.?\d*)/ |
var reAS = /(-?\d+\.?\d*\s*[+-]\s*[+-]?\d+\.?\d*)/ |
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while (var match = reMD.match(s)) { |
while (var match = reMD.match(s)) { |
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match[0] ~~ reM |
match[0] ~~ reM |
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? s.sub!(reMD, operate(match[0], '*').to_s) |
? s.sub!(reMD, operate(match[0], '*').to_s) |
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: s.sub!(reMD, operate(match[0], '/').to_s) |
: s.sub!(reMD, operate(match[0], '/').to_s) |
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} |
} |
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| Line 4,911: | Line 4,911: | ||
match[0] ~~ reA |
match[0] ~~ reA |
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? s.sub!(reAS, add(match[0]).to_s) |
? s.sub!(reAS, add(match[0]).to_s) |
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: s.sub!(reAS, subtract(match[0]).to_s) |
: s.sub!(reAS, subtract(match[0]).to_s) |
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} |
} |
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return s |
return s |
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} |
} |
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var rePara = /(\([^\(\)]*\))/ |
var rePara = /(\([^\(\)]*\))/ |
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s.split!.join!('').sub!(/^\+/,'') |
s.split!.join!('').sub!(/^\+/,'') |
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while (var match = s.match(rePara)) { |
while (var match = s.match(rePara)) { |
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s.sub!(rePara, evalExp(match[0])) |
s.sub!(rePara, evalExp(match[0])) |
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} |
} |
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return evalExp(s) |
return Number(evalExp(s)) |
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}</lang> |
}</lang> |
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| Line 4,937: | Line 4,937: | ||
['2 * (3 + (4 * 5 + (6 * 7) * 8) - 9) * 10' => 7000], |
['2 * (3 + (4 * 5 + (6 * 7) * 8) - 9) * 10' => 7000], |
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] { |
] { |
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var num = evalArithmeticExp(expr) |
var num = evalArithmeticExp(expr) |
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assert_eq(num, res) |
assert_eq(num, res) |
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"%-45s == %10g\n".printf(expr, num) |
"%-45s == %10g\n".printf(expr, num) |
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}</lang> |
}</lang> |
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