遺伝的アルゴリズム プログラムがより迅速に結果を返せるようにするために、コードを追加または省略する効果的な方法を探しています。プログラムの目標は、文字列を受け入れて、できるだけ一致する他の文字列を作成することです。新しく作成された文字列が最も近いもの (上位 5 つ) と一致し、子孫を生成します (そのうちのいくつかは、長さに影響を与えずに新しい乱数を文字列に入れる突然変異を持っています)。すべて正常に動作しますが、長い文字列 (4 以上) を完全に一致させるには、計り知れないほどの世代が必要です。tl;drの長さについて申し訳ありませんが、これが私の現在のコードです。批判しろ！
#include "stdio.h"
#include "fstream"
#include "ctime"
#include "iostream"
#include "string"
#include "windows.h"
#define CHARACTERS 16
#define STRINGS 100
/*
Enter String(max 16 chars)
Generate 100 words of the same length
Check for Fitness(how close each word is to the string)
Every generation: display top 5
Clone the top 5
Top 20 reproduce(mix each other's chars)
1/1000 chance the children might mutate(each newly mixed string or char might have a completely random number)
*/
typedef struct _stringHolder
{
char randString[CHARACTERS];
int fitness;
}StringHolder;
//Randomly generate 100 words
void generate(char *myString, StringHolder *SH)
{
unsigned seed = time(0);
srand(seed);
//int i = 0;
int j = 0;
char randChar;
//char showString[CHARACTERS];
for(int i=0; i<STRINGS; i++)
{
for(int j=0; j<strlen(myString); j++)
{
randChar = ('a' + (rand() %26));
SH[i].randString[j] = randChar;
}
//limiter so that it doesn't crash
SH[i].randString[strlen(myString)] = 0;
}
}
//Check the similarity of the random strings to the original string.
void getFitness(char *myString, StringHolder *SH)
{
for(int i=0; i<STRINGS; i++)
{
for(int j=0; j<strlen(myString); j++)
{
if(SH[i].randString[j] == myString[j])
{ SH[i].fitness++; }
}
}
}
//Sort the strings
void sortByFitness(char *myString, StringHolder *SH)
{
bool swapped = 1;
while(swapped)
{
swapped = 0;
for(int a=0; a<STRINGS-1; a++)
{
if(SH[a].fitness < SH[a+1].fitness)
{
swapped = 1;
StringHolder temp[STRINGS];
temp[a] = SH[a+1]/*.randString[i]*/;
SH[a+1]/*.randString[i]*/ = SH[a]/*.randString[i]*/;
SH[a]/*.randString[i]*/ = temp[a];
/*if(SH[a].fitness < SH[a+1].fitness)
{ swapped = 0; }*/
}
}
}//while
}
//Clone the Top 5 strings
void cloneTopFive(char *myString, StringHolder *SH, StringHolder *cloneString)
{
for(int i=0; i<5; i++)
{
cloneString[i]/*.randString[j]*/ = SH[i]/*.randString[j]*/;
//printf("cloneString[%d] now holds %s.\n", i, SH[i].randString);
}
}
//Reproduce the Top 20 strings by mixing and matching elements between strings
void reproduceTopTwenty(char *myString, StringHolder *SH /*char *cloneString*/)
{
/*for(int h=5; h<95; h++)
{*/
for(int i=0; i<20; i++)
{
for(int j=0; j<strlen(myString)-1; j++)
{
//char temp[16];
//temp[i] =
SH[i].randString[j] = SH[1 + (rand() %20)].randString[1 + (rand() %strlen(myString)-1)];
int randomNumber;
randomNumber = (1 +(rand() %100));
if(randomNumber == 7)
{
SH[i].randString[1 + (rand() %strlen(myString)-1)] = ('a' + (rand() %26));
}
}
}
}
//Randomize the other 75 numbers and place the cloned Top 5 at the end of the String Holder(SH)
void randomizeOther75(char *myString, StringHolder *SH, StringHolder *cloneString)
{
for(int i=20; i<STRINGS; i++)
{
for(int j=0; j<strlen(myString); j++)
{
SH[i].randString[j] = ('a' + (rand() %26));
}
}
for(int i=0; i<5; i++)
{
for(int j=0; j<strlen(myString); j++)
{
int v = i + 94;
SH[v].randString[j] = cloneString[i].randString[j];
}
}
}
void printGen(char *myString, StringHolder *SH)
{
for(int i=0; i<5; i++)
{
if(SH[i].fitness == strlen(myString))
{ printf("%s has %d fitness. Perfection!\n", SH[i].randString, SH[i].fitness); }
else
printf("%s has %d fitness.\n", SH[i].randString, SH[i].fitness);
}
}
void main()
{
char myString[CHARACTERS];
StringHolder cloneString[5];
StringHolder SH[STRINGS];
for(int i=0; i<STRINGS; i++)
{ SH[i].fitness = 0; }
printf("Enter your name(no whitespaces): ");
scanf("%s", myString);
/*while(strlen(myString) >= CHARACTERS)
{
printf("Please type a string with less than 16 characters\n");
scanf("%s", myString);
}*/
//printf("%s\n", myString);
//first generation
generate(myString, SH);
int gen = 0;
while(1)
{
char x = ' ';
/* printf("Insert something. Anything!");
scanf(&x);*/
/*char newString[CHARACTERS];
for(int i=0; i<5; i++)
{
for( int j=0; j< strlen(myString); j++)
{
newString[j] = SH[i].randString[j];
}
newString[strlen(myString)] = 0;
printf("%s has %d fitness.\n", newString, SH[i].fitness);
}*/
printf("\n");
while(x==' ')
{
printf("Generation %d: \n", gen);
getFitness(myString, SH);
sortByFitness(myString, SH);
printGen(myString, SH);
for(int i=0; i<STRINGS; i++)
{ SH[i].fitness = 0; }
cloneTopFive(myString, SH, cloneString);
reproduceTopTwenty(myString, SH);
randomizeOther75(myString, SH, cloneString);
/*getFitness(myString, SH);
sortByFitness(myString, SH);
for(int i=0; i<5; i++)
{
printf("%s has %d fitness.\n", SH[i].randString, SH[i].fitness);
}
printf("\n");*/
//printf("\nInsert ' ' to continue!\n");
//scanf("%c",&x);
gen++;
}
}