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Java
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public class JiSuanYanZhouLv { public static void main(String[] args) { double n = 0;
public class JiSuanYanZhouLv { public static void main(String[] args) { double n = 0;
Topic sourcepublic class JiSuanYanZhouLv {
public static void main(String[] args) {
double n = 0; double sum = 0 ; double reduce = 0; double pai = 0; for (double i = 2;i < 999999999 ;i++){
i+=3; sum = sum + 1/i; }
System.out.println(sum); for (double j = 0;j < 999999999 ;j++){
j+=3; reduce = reduce + 1/j; }
System.out.println(reduce); pai = (1+sum-reduce)*4; System.out.println(pai); }
}
public class JiSuanYanZhouLv { public static void main(String[] args) { double n = 0; double sum = 0 ; double reduce = 0; double pai = 0; for (double i = 2;i < 999999999 ;i++){ i+=3; sum = sum + 1/i; } System.out.println(sum); for (double j = 0;j < 999999999 ;j++){ j+=3; reduce = reduce + 1/j; } System.out.println(reduce); pai = (1+sum-reduce)*4; System.out.println(pai); }}
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