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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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67
Task/Evolutionary-algorithm/ColdFusion/evolutionary-algorithm.cfm Normal file
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<Cfset theString = 'METHINKS IT IS LIKE A WEASEL'>
<cfparam name="parent" default="">
<Cfset theAlphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ ">
<Cfset fitness = 0>
<Cfset children = 3>
<Cfset counter = 0>
<Cfloop from="1" to="#children#" index="child">
<Cfparam name="child#child#" default="">
<Cfparam name="fitness#child#" default=0>
</Cfloop>
<Cfloop condition="fitness lt 1">
<Cfset oldparent = parent>
<Cfset counter = counter + 1>
<cfloop from="1" to="#children#" index="child">
<Cfset thischild = ''>
<Cfloop from="1" to="#len(theString)#" index="i">
<cfset Mutate = Mid(theAlphabet, RandRange(1, 28), 1)>
<cfif fitness eq 0>
<Cfset thischild = thischild & mutate>
<Cfelse>
<Cfif Mid(theString, i, 1) eq Mid(variables["child" & child], i, 1)>
<Cfset thischild = thischild & Mid(variables["child" & child], i, 1)>
<Cfelse>
<cfset MutateChance = 1/fitness>
<Cfset MutateChanceRand = rand()>
<Cfif MutateChanceRand lte MutateChance>
<Cfset thischild = thischild & mutate>
<Cfelse>
<Cfset thischild = thischild & Mid(variables["child" & child], i, 1)>
</Cfif>
</Cfif>
</cfif>
</Cfloop>
<Cfset variables["child" & child] = thischild>
</cfloop>
<cfloop from="1" to="#children#" index="child">
<Cfset thisChildFitness = 0>
<Cfloop from="1" to="#len(theString)#" index="i">
<Cfif Mid(variables["child" & child], i, 1) eq Mid(theString, i, 1)>
<Cfset thisChildFitness = thisChildFitness + 1>
</Cfif>
</Cfloop>
<Cfset variables["fitness" & child] = (thisChildFitness)/len(theString)>
<Cfif variables["fitness" & child] gt fitness>
<Cfset fitness = variables["fitness" & child]>
<Cfset parent = variables["child" & child]>
</Cfif>
</cfloop>
<Cfif parent neq oldparent>
<Cfoutput>###counter# #numberformat(fitness*100, 99)#% fit: #parent#<br></Cfoutput><cfflush>
</Cfif>
</Cfloop>