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A-M baby

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Ingy döt Net 2013-04-10 21:29:02 -07:00
parent 764da6cbbb
commit db842d013d
19005 changed files with 197040 additions and 7 deletions
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26
Task/Monte-Carlo-methods/Java/monte-carlo-methods.java Normal file
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@ -0,0 +1,26 @@
public class MC {
public static void main(String[] args) {
System.out.println(getPi(10000));
System.out.println(getPi(100000));
System.out.println(getPi(1000000));
System.out.println(getPi(10000000));
System.out.println(getPi(100000000));
}
public static double getPi(int numThrows){
int inCircle= 0;
for(int i= 0;i < numThrows;i++){
//a square with a side of length 2 centered at 0 has
//x and y range of -1 to 1
double randX= (Math.random() * 2) - 1;//range -1 to 1
double randY= (Math.random() * 2) - 1;//range -1 to 1
//distance from (0,0) = sqrt((x-0)^2+(y-0)^2)
double dist= Math.sqrt(randX * randX + randY * randY);
//^ or in Java 1.5+: double dist= Math.hypot(randX, randY);
if(dist < 1){//circle with diameter of 2 has radius of 1
inCircle++;
}
}
return 4.0 * inCircle / numThrows;
}
}