题解 | #记负均正#
记负均正
https://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); // 注意 hasNext 和 hasNextLine 的区别 while (in.hasNextInt()) { // 注意 while 处理多个 case int num = in.nextInt(); int temp; int countNeg = 0; int sum = 0; int count = 0; for(int i = 0; i < num; i++){ temp = in.nextInt(); if(temp < 0){ countNeg++; }else if(temp > 0){ sum += temp; count++; } } System.out.print(countNeg + " "); System.out.printf("%.1f", count > 0?(double)sum/count : 0); } } }