我也来一个
public class Hello { public static void main(String[] args) { double pi = 0; int n = 100000000; for (int i = 1; i < n; i += 4) { pi += 4.0 / i - 4.0 / (i+2); } System.out.println("pi = " + pi); }}
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夜奏fa
我也来一个