一、题目
原题链接：https://zoj.pintia.cn/problem-sets/91827364500/problems/91827364547
Larry graduated this year and finally has a job. He's making a lot of money, but somehow never seems to have enough. Larry has decided that he needs to grab hold of his financial portfolio and solve his financing problems. The first step is to figure out what's been going on with his money. Larry has his bank account statements and wants to see how much money he has. Help Larry by writing a program to take his closing balance from each of the past twelve months and calculate his average account balance.
Input Format:
The input will be twelve lines. Each line will contain the closing balance of
his bank account for a particular month. Each number will be positive and displayed
to the penny. No dollar sign will be included.
Output Format:
The output will be a single number, the average (mean) of the closing balances
for the twelve months. It will be rounded to the nearest penny, preceded immediately
by a dollar sign, and followed by the end-of-line. There will be no other spaces
or characters in the output.
Sample Input:
100.00
489.12
12454.12
1234.10
823.05
109.20
5.27
1542.25
839.18
83.99
1295.01
1.75
Sample Output:
$1581.42
二、AC代码
啥也不说，快乐的水几题。
import java.util.Scanner;
public class P1048_AC_Financial_Management {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
double sum = 0;
for (int i = 0; i < 12; i++) {
double line = s.nextDouble();
sum+=line;
}
System.out.printf("%s%.2f", "$", sum/12.0);
}
}