Arithmetic evaluation: Difference between revisions
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→{{header|Sidef}}: updated code
m (→{{header|Sidef}}: updated code) |
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Line 4,875:
func operate(s, op) {
s.split(op).map{|c| Number(c
}
func add(s) {
operate(s.sub(/^\+/,'').sub(/\++/,'+'), '+')
}
func subtract(s) {
s.gsub!(/(\+-|-\+)/,'-')
if (s ~~ /--/) {
return(add(s.sub(/--/,'+')))
}
var b = s.split('-')
b.len == 3 ? (-1*Number(b[1]
: operate(s, '-')
}
s.gsub!(/[()]/,'').gsub!(/-\+/, '-')
var reM = /\*/
var reMD = %r"(\d+\.?\d*\s*[*/]\s*[+-]?\d+\.?\d*)"
var reA = /\d\+/
var reAS = /(-?\d+\.?\d*\s*[+-]\s*[+-]?\d+\.?\d*)/
while (var match = reMD.match(s)) {
match[0] ~~ reM
? s.sub!(reMD, operate(match[0], '*').to_s)
: s.sub!(reMD, operate(match[0], '/').to_s)
}
Line 4,911:
match[0] ~~ reA
? s.sub!(reAS, add(match[0]).to_s)
: s.sub!(reAS, subtract(match[0]).to_s)
}
return s
}
var rePara = /(\([^\(\)]*\))/
s.split!.join!('').sub!(/^\+/,'')
while (var match = s.match(rePara)) {
s.sub!(rePara, evalExp(match[0]))
}
return Number(evalExp(s)
}</lang>
Line 4,937:
['2 * (3 + (4 * 5 + (6 * 7) * 8) - 9) * 10' => 7000],
] {
var num = evalArithmeticExp(expr)
assert_eq(num, res)
"%-45s == %10g\n".printf(expr, num)
}</lang>
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