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852天前import java.util.Scanner; |
public class Main { |
public static void main(String[] args) { |
Scanner input = new Scanner(System.in); |
int num = input.nextInt(); |
int [] a = new int[num]; |
int i, j, k; |
|
for(i = 2, k = 0; i < num; i++) |
{ |
int flag = 0; |
for(j = 2; j <= i/2; j++) |
{ |
if(i % j == 0) |
flag = 1; |
} |
if(flag == 0) |
{ |
a[k] = i; |
k++; |
} |
} |
|
System.out.print(a[0]); |
for(i = 1; i < k; i++) |
System.out.print("," + a[i]); |
|
input.close(); |
} |
} |
方法2： |
import java.util.*; |
public class Main{ |
|
public static void main(String[] args) { |
Scanner scan = new Scanner(System.in); |
int N = scan.nextInt(); |
int i, j, k = 0; |
for(i = 2; i <= N; i++) { |
int flag = 0; |
for(j = 2; j < i; j++) { |
if(i%j == 0) { |
flag = 1; |
} |
} |
if(flag == 0) { |
if(k == 0) |
System.out.print(i); |
else |
System.out.print("," +i); |
k++; |
} |
} |
|
scan.close(); |
} |
} |
