求3～1000內(nèi)個(gè)位數(shù)為3的質(zhì)數(shù)的和和個(gè)數(shù)
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田心楓
TA貢獻(xiàn)1064條經(jīng)驗(yàn) 獲得超383個(gè)贊
package?com.imooc.eleven;
/**
?*?Created?by?junfeng?on?17/4/11.
?*/
public?class?WeekDemo1?{
????public?static?void?main(String[]?args)?{
???????//?System.out.println(1453%10);
????????int?sum?=0;
????????int?n=0;
????????for?(int?i=3;i<=1000;i++){
????????????if?(i%10==3&&isPrime(i)){
????????????????sum?+=?i;
????????????????n++;
????????????}
????????}
????????System.out.println(sum);
????????System.out.println(n);
????}
????public?static?boolean?isPrime(int?n){
????????for(int?i=2;i<=n/2;i++){
????????????if(n%i?==?0)
????????????????return?false;
????????}
????????return?true;
????}
}-
田心楓你把那個(gè)主方法和isPrime()拿到你的C里面去不就行了
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