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Data update

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Ingy döt Net 2026-02-01 16:33:20 -08:00
parent 5150844a7d
commit 4bb20c9b71
7735 changed files with 38060 additions and 199180 deletions
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88
Task/Evolutionary-algorithm/Ceylon/evolutionary-algorithm.ceylon
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@ -1,49 +1,49 @@
import ceylon.random {
DefaultRandom
DefaultRandom
}
shared void run() {
value mutationRate = 0.05;
value childrenPerGeneration = 100;
value target = "METHINKS IT IS LIKE A WEASEL";
value alphabet = {' ', *('A'..'Z')};
value random = DefaultRandom();
value randomLetter => random.nextElement(alphabet);
function fitness(String a, String b) =>
count {for([c1, c2] in zipPairs(a, b)) c1 == c2};
function mutate(String string) =>
String {
for(letter in string)
if(random.nextFloat() < mutationRate)
then randomLetter
else letter
};
function makeCopies(String string) =>
{for(i in 1..childrenPerGeneration) mutate(string)};
function chooseFittest(String+ children) =>
children
.map((String element) => element->fitness(element, target))
.max(increasingItem)
.key;
variable value parent = String {for(i in 1..target.size) randomLetter};
variable value generationCount = 0;
function display() => print("``generationCount``: ``parent``");
display();
while(parent != target) {
parent = chooseFittest(parent, *makeCopies(parent));
generationCount++;
display();
}
print("mutated into target in ``generationCount`` generations!");
value mutationRate = 0.05;
value childrenPerGeneration = 100;
value target = "METHINKS IT IS LIKE A WEASEL";
value alphabet = {' ', *('A'..'Z')};
value random = DefaultRandom();
value randomLetter => random.nextElement(alphabet);
function fitness(String a, String b) =>
count {for([c1, c2] in zipPairs(a, b)) c1 == c2};
function mutate(String string) =>
String {
for(letter in string)
if(random.nextFloat() < mutationRate)
then randomLetter
else letter
};
function makeCopies(String string) =>
{for(i in 1..childrenPerGeneration) mutate(string)};
function chooseFittest(String+ children) =>
children
.map((String element) => element->fitness(element, target))
.max(increasingItem)
.key;
variable value parent = String {for(i in 1..target.size) randomLetter};
variable value generationCount = 0;
function display() => print("``generationCount``: ``parent``");
display();
while(parent != target) {
parent = chooseFittest(parent, *makeCopies(parent));
generationCount++;
display();
}
print("mutated into target in ``generationCount`` generations!");
}