3.1415926 for循环次数越多 越接近现在的π
Topic source
/**
* for练习
*/
public class Main {
public static void main(String[] args) {
double pi = 0;
for (int i = 1; i < 100000; i += 2) {
// TODO:
pi += 4* (Math.pow(-1, i/2+2)/(float)1/i);
}
System.out.println(pi);
}
}
- 1
Yu直男
/**
* for练习
*/
public class Main {
public static void main(String[] args) {
double pi = 0;
for (int i = 1; i < 100000; i += 2) {
// TODO:
pi += Math.pow(-1, i/2+2)/(float)1/i;
}
System.out.println(4*pi);
}
}