网易笔试凉凉（1.5a）
只a了第一题，第二题过了0.5。感觉自己太菜了
第一题求素数（ac）：
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
int n;
long sum = 0;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
int [] arr = new int[n];
for (int i = 0;i < n;++i)
arr[i] = sc.nextInt();
for (int num : arr) {
sum += num / 2;
}
System.out.println(sum);
}
} 第二题字典序（0.5a）： import java.util.Scanner;
public class Main {
public static void main(String[] args) {
int m,n;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
m = sc.nextInt();
int [] num = new int[n];
int [] arr = new int[m];
for (int i = 0;i < m;++i){
arr[i] = sc.nextInt();
num[arr[i]-1] = 1;
}
for (int i = 0;i < m;++i){
if (i > 0 && arr[i] < arr[i-1]){
System.out.print(arr[i]);
if (i != n-1) System.out.print(" ");
continue;
}
for (int j = 0;j < arr[i];++j){
if (num[j] != 1){
System.out.print(j+1);
num[j] = 1;
if (i != n-1) System.out.print(" ");
}
}
System.out.print(arr[i]);
if (i != n-1) System.out.print(" ");
}
for (int i = 0;i < n;++i){
if (num[i] != 1){
System.out.print(i+1);
if (i != n-1) System.out.print(" ");
}
}
}
} 