class Hello { public static void main(String args[]) { int end=100; int begin=2; int i,j; for(i=begin;i<=100;i++) { for(j=2;j<=i/2;j++) { if(i%j==0) break; } if (j>i/2) System.out.println(""+i+"是素数"); } } }
public static void main(String[] args) { int j; for(int i=0;i<=100;i++){ j=2; while(i%j!=0) j++; if(i==j){ System.out.println(i); } } }
public class PrimeInteger{ public static void main(String[] args){ System.out.println(getPrime(1000)); }
public static ArrayList<Integer> getPrime(int max){ boolean[] integers = new boolean[max + 1]; int maxLength = (int)Math.sqrt(max); for(int i = 2; i <= maxLength; i++) { for(int j = 2 ; (j * i) <= max; j++) { integers[j*i] = true; } } ArrayList<Integer> result = new ArrayList<Integer>(); for(int i = 1; i < integers.length; i++) { if(!integers[i]){ result.add(i); } } return result; } }
class Hello
{
public static void main(String args[])
{
int end=100;
int begin=2;
int i,j;
for(i=begin;i<=100;i++)
{
for(j=2;j<=i/2;j++)
{
if(i%j==0)
break;
}
if (j>i/2)
System.out.println(""+i+"是素数");
}
}
}
public static void main(String[] args) {
int j;
for(int i=0;i<=100;i++){
j=2;
while(i%j!=0)
j++;
if(i==j){
System.out.println(i); }
}
}
public class PrimeInteger{
public static void main(String[] args){
System.out.println(getPrime(1000));
}
public static ArrayList<Integer> getPrime(int max){
boolean[] integers = new boolean[max + 1];
int maxLength = (int)Math.sqrt(max);
for(int i = 2; i <= maxLength; i++) {
for(int j = 2 ; (j * i) <= max; j++) {
integers[j*i] = true;
}
}
ArrayList<Integer> result = new ArrayList<Integer>();
for(int i = 1; i < integers.length; i++) {
if(!integers[i]){
result.add(i);
}
}
return result;
}
}