Chemical calculator: Difference between revisions
→{{header|Nim}}
Line 980:
</lang>
No assertion errors.
=={{header|Kotlin}}==
{{trans|D}}
<lang scala>var atomicMass = mutableMapOf(
"H" to 1.008,
"He" to 4.002602,
"Li" to 6.94,
"Be" to 9.0121831,
"B" to 10.81,
"C" to 12.011,
"N" to 14.007,
"O" to 15.999,
"F" to 18.998403163,
"Ne" to 20.1797,
"Na" to 22.98976928,
"Mg" to 24.305,
"Al" to 26.9815385,
"Si" to 28.085,
"P" to 30.973761998,
"S" to 32.06,
"Cl" to 35.45,
"Ar" to 39.948,
"K" to 39.0983,
"Ca" to 40.078,
"Sc" to 44.955908,
"Ti" to 47.867,
"V" to 50.9415,
"Cr" to 51.9961,
"Mn" to 54.938044,
"Fe" to 55.845,
"Co" to 58.933194,
"Ni" to 58.6934,
"Cu" to 63.546,
"Zn" to 65.38,
"Ga" to 69.723,
"Ge" to 72.630,
"As" to 74.921595,
"Se" to 78.971,
"Br" to 79.904,
"Kr" to 83.798,
"Rb" to 85.4678,
"Sr" to 87.62,
"Y" to 88.90584,
"Zr" to 91.224,
"Nb" to 92.90637,
"Mo" to 95.95,
"Ru" to 101.07,
"Rh" to 102.90550,
"Pd" to 106.42,
"Ag" to 107.8682,
"Cd" to 112.414,
"In" to 114.818,
"Sn" to 118.710,
"Sb" to 121.760,
"Te" to 127.60,
"I" to 126.90447,
"Xe" to 131.293,
"Cs" to 132.90545196,
"Ba" to 137.327,
"La" to 138.90547,
"Ce" to 140.116,
"Pr" to 140.90766,
"Nd" to 144.242,
"Pm" to 145.0,
"Sm" to 150.36,
"Eu" to 151.964,
"Gd" to 157.25,
"Tb" to 158.92535,
"Dy" to 162.500,
"Ho" to 164.93033,
"Er" to 167.259,
"Tm" to 168.93422,
"Yb" to 173.054,
"Lu" to 174.9668,
"Hf" to 178.49,
"Ta" to 180.94788,
"W" to 183.84,
"Re" to 186.207,
"Os" to 190.23,
"Ir" to 192.217,
"Pt" to 195.084,
"Au" to 196.966569,
"Hg" to 200.592,
"Tl" to 204.38,
"Pb" to 207.2,
"Bi" to 208.98040,
"Po" to 209.0,
"At" to 210.0,
"Rn" to 222.0,
"Fr" to 223.0,
"Ra" to 226.0,
"Ac" to 227.0,
"Th" to 232.0377,
"Pa" to 231.03588,
"U" to 238.02891,
"Np" to 237.0,
"Pu" to 244.0,
"Am" to 243.0,
"Cm" to 247.0,
"Bk" to 247.0,
"Cf" to 251.0,
"Es" to 252.0,
"Fm" to 257.0,
"Uue" to 315.0,
"Ubn" to 299.0
)
fun evaluate(s: String): Double {
val sym = "$s["
var sum = 0.0
var symbol = ""
var number = ""
for (i in 0 until sym.length) {
val c = sym[i]
if (c in '@'..'[') {
// @, A-Z, [
var n = 1
if (number != "") {
n = Integer.parseInt(number)
}
if (symbol != "") {
sum += atomicMass.getOrElse(symbol) { 0.0 } * n
}
if (c == '[') {
break
}
symbol = c.toString()
number = ""
} else if (c in 'a'..'z') {
symbol += c
} else if (c in '0'..'9') {
number += c
} else {
throw RuntimeException("Unexpected symbol $c in molecule")
}
}
return sum
}
fun replaceParens(s: String): String {
var letter = 'a'
var si = s
while (true) {
var start = si.indexOf('(')
if (start == -1) {
break
}
for (i in start + 1 until si.length) {
if (si[i] == ')') {
val expr = si.substring(start + 1 until i)
val symbol = "@$letter"
si = si.replaceFirst(si.substring(start until i + 1), symbol)
atomicMass[symbol] = evaluate(expr)
letter++
break
}
if (si[i] == '(') {
start = i
continue
}
}
}
return si
}
fun main() {
val molecules = listOf(
"H", "H2", "H2O", "H2O2", "(HO)2", "Na2SO4", "C6H12",
"COOH(C(CH3)2)3CH3", "C6H4O2(OH)4", "C27H46O", "Uue"
)
for (molecule in molecules) {
val mass = evaluate(replaceParens(molecule))
val moleStr = "%17s".format(molecule)
val massStr = "%7.3f".format(mass)
println("$moleStr -> $massStr")
}
}</lang>
{{out}}
<pre> H -> 1.008
H2 -> 2.016
H2O -> 18.015
H2O2 -> 34.014
(HO)2 -> 34.014
Na2SO4 -> 142.036
C6H12 -> 84.162
COOH(C(CH3)2)3CH3 -> 186.295
C6H4O2(OH)4 -> 176.124
C27H46O -> 386.664
Uue -> 315.000</pre>
=={{header|Nim}}==
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