public class Main {
public static void main(String[] args) {
double pi = 0;
int j = 0;
for (double i = 1;i < 10000;i += 2) {
//重点:i一定要是double型,不然后面pi计算出来的都是整数
// TODO
pi += (1/i)*Math.pow((-1),j);
j++;
}
pi = 4*pi;
System.out.println(pi);
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public class Main {
public static void main(String[] args) {
double pi = 0;
int j = 0;
for (double i = 1;i < 10000;i += 2) {
//重点:i一定要是double型,不然后面pi计算出来的都是整数
// TODO
pi += (1/i)*Math.pow((-1),j);
j++;
}
pi = 4*pi;
System.out.println(pi);
}
}