OJ-0815

题目

示例1

输入
bb1234aa
输出
10

示例2

输入
bb12-34aa
输出
-31

示例3

输入
bb0012-0034aa
输出
-31

题解

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        long res = 0;
        String s = scanner.nextLine();
        int n = s.length();
        for (int i = 0; i < n; i++) {
            if (!Character.isDigit(s.charAt(i)) && s.charAt(i) != '-') {
                continue;
            }
            if (s.charAt(i) == '-') {
                int j = i + 1;
                long num = 0;
                while (j < n && Character.isDigit(s.charAt(j))) {
                    num = num * 10 + s.charAt(j) - '0';
                    j++;
                }
                res -= num;
                i = j - 1;
            } else {
                res += s.charAt(i) - '0';
            }
        }
        System.out.println(res);
    }
}