土方法
Topic source
public class Main {
public static void main(String[] args) {
double pi = 0;
for (int i = 1; Math.abs(i) <= 100000; i = (Math.abs(i) + 2) * (i / Math.abs(i)) * (-1)) {
// TODO
pi += (4.0 / i);
}
System.out.println(pi);
}
}
- 1
public class Main {
public static void main(String[] args) {
double pi = 0;
for (int i = 1; Math.abs(i) <= 100000; i = (Math.abs(i) + 2) * (i / Math.abs(i)) * (-1)) {
// TODO
pi += (4.0 / i);
}
System.out.println(pi);
}
}
用户5618531169
public class Main {
public static void main(String[] args) {
double pi = 0;
for (int i = 1; Math.abs(i) <= 100000; i = (Math.abs(i) + 2) * (i / Math.abs(i)) * (-1)) {
// TODO
pi = (pi / 4 + (1.0 / i)) * 4;
}
System.out.println(pi);
}
}