package s1t21;public class Task24 { /**
* 求1-100里面所有质数之和
*/
public static void main(String[] args) {
int sum = 0;
for (int i = 1,j = 2 ;j < i && i <= 100; i++,j++) {
if (i % j == 0) {
sum = sum + i;
}
}
System.out.println("1-100里面所有质数之和为:"+sum);
}
}我用二重循环能做出来,当是只用一个for循环就没只做出来
* 求1-100里面所有质数之和
*/
public static void main(String[] args) {
int sum = 0;
for (int i = 1,j = 2 ;j < i && i <= 100; i++,j++) {
if (i % j == 0) {
sum = sum + i;
}
}
System.out.println("1-100里面所有质数之和为:"+sum);
}
}我用二重循环能做出来,当是只用一个for循环就没只做出来
public class Task24 {/**
* 求1-100里面所有质数之和
*/public static void main(String[] args)
{
int m,i,k,sum=0;
for(m=2;m<=100;m++)
{
//k=m/2;for(i=2;i<=k;i++)
if(m%i==0)
break;
if(i>=k+1)
{
System.out.println(m);
sum+=m;
}
}
System.out.println("1-100里面所有质数之和为:"+sum);
}
}
这个是没有注释的;public class Task24 {/**
* 求1-100里面所有质数之和
*/public static void main(String[] args)
{
int m,i,k,sum=0;
for(m=2;m<=100;m++)
{
k=m/2;
for(i=2;i<=k;i++)
if(m%i==0)
break;
if(i>=k+1)
{
System.out.println(m);
sum+=m;
}
}
System.out.println("1-100里面所有质数之和为:"+sum);
}
}
public static void main(String[] args) {
int sum = 0;
for (int i = 3,j = 2 ;j < i && i <= 100;j++) { if (i % j == 0) {
j=1;
i++;
continue;
}
else{
if(j==i-1) {
j=1;
sum = sum + i;
System.out.println(i);
i++;
}
}
}
sum = sum+2;
System.out.println("1-100里面所有质数之和为:"+sum);
}