华为0506笔试

菜鸡只会做第二题，还没做全对，被输出格式卡住了，过了90，事后想起来了可能不对的地方，发出来记录下

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String exp = sc.next();
        String[] nums = exp.split("\\+");
        StringBuilder ss = new StringBuilder();
        if (nums[0].contains(".") && nums[1].contains(".")) {
            String[] n1 = nums[0].split("\\.");
            String[] n2 = nums[1].split("\\.");
            int r = add1(n1[1], n2[1]);
            add2(n1[0], n2[0], r);
            ss.append(sb2).append(".").append(sb);
        } else if (nums[0].contains(".") && !nums[1].contains(".")) {
            String[] n1 = nums[0].split("\\.");
            add2(n1[0], nums[1], 0);
            ss.append(sb2).append(".").append(n1[1]);
        } else if (!nums[0].contains(".") && nums[1].contains(".")) {
            String[] n2 = nums[1].split("\\.");
            add2(nums[0], n2[0], 0);
            ss.append(sb2).append(".").append(n2[1]);
        } else {
            add2(nums[0], nums[1], 0);
            ss.append(sb2);
        }
        // 记录! + ! = 0 这种特殊情况
        boolean flag1 = false;
        for (int i = 0; i < ss.length(); i++) {
            char c = ss.charAt(i);
            if (c != '0' && c != '.') {
                flag1 = true;
            }
        }
        if (flag1) {
            int l = 0;
            int r = ss.length() - 1;
            char[] rc = ss.toString().toCharArray();
            while (l < rc.length) {
                if (rc[l] != '0') {
                    break;
                }
                l++;
            }
            // 记录 25.000这种特殊情况
            boolean flag = false;
            if (ss.toString().contains(".")) {
                for (int i = ss.indexOf(".") + 1; i < ss.length(); i++) {
                    if (ss.charAt(i) != '0') {
                        flag = true;
                        break;
                    }
                }
                if (flag) {
                    while (r >= 0) {
                        if (rc[r] != '0' || rc[r + 1] == '.') {
                            break;
                        }
                        r--;
                    }
                }
            }
            if (ss.toString().contains(".") && !flag) {
                System.out.println(String.valueOf(rc).substring(l, ss.indexOf(".")));
            } else {
                System.out.println(String.valueOf(rc).substring(l, r + 1));
            }
        } else {
            System.out.println(0);
        }
        
    }
    // 小数答案
    static StringBuilder sb = new StringBuilder();
    // 整数答案
    static StringBuilder sb2 = new StringBuilder();
    public static int add1(String s1, String s2) {
        //StringBuilder sb = new StringBuilder();
        char[] s1c = s1.toCharArray();
        char[] s2c = s2.toCharArray();
        if (s1c.length < s2c.length) {
            char[] temp = s1c;
            s1c = s2c;
            s2c = temp;
        }
        int index = s1c.length - 1;
        int r = 0;
        while (index >= 0) {
            if (index > s2c.length - 1) {
                sb.insert(0, s1c[index]);
            } else {
                if ('0' <= s1c[index] && s1c[index] <= '9' &&
                        '0' <= s2c[index] && s2c[index] <= '9') {
                    int t = Integer.parseInt(s1c[index] + "") + Integer.parseInt(s2c[index] + "") + r;
                    sb.insert(0, t % 10);
                    r = t / 10;
                } else {
                    int sum = sadd(s1c[index], s2c[index]) + r;
                    sb.insert(0, sum % 10);
                    r = sum / 10;
                }
            }
            index--;
        }
        return r;
    }

    public static void add2(String s1, String s2, int m) {
        char[] s1c = s1.toCharArray();
        char[] s2c = s2.toCharArray();
        int i1 = s1c.length - 1;
        int i2 = s2c.length - 1;
        int r = 0;
        while (i1 >= 0 || i2 >= 0) {
            char t1 = i1 >= 0 ? s1c[i1] : '0';
            char t2 = i2 >= 0 ? s2c[i2] : '0';
            if ('0' <= t1 && t1 <= '9' &&
                    '0' <= t2 && t2 <= '9') {
                int sum = Integer.parseInt(t1+"") + Integer.parseInt(t2 + "") + r;
                if (i1 == s1c.length - 1 && i2 == s2c.length - 1) {
                    sum += m;
                }
                sb2.insert(0, sum % 10);
                r = sum / 10;
            } else {
                int sum = sadd(t1, t2) + r;
                if (i1 == s1c.length - 1 && i2 == s2c.length - 1) {
                    sum += m;
                }
                sb2.insert(0, sum % 10);
                r = sum / 10;
            }
            i1--;
            i2--;
        }
        if (r != 0) {
            sb2.insert(0, r);
        }
    }

    public static int sadd(char s1, char s2) {
        int res;
        if (s1 == '!' && s2 == '!') {
            res = 0;
        } else if (s1 == '!' && s2 == '@' || s1 == '@' && s2 == '!') {
            res = 13;
        } else if (s1 == '!' && s2 == '#' || s1 == '#' && s2 == '!') {
            res = 4;
        } else if (s1 == '@' && s2 == '@') {
            res = 7;
        } else if (s1 == '@' && s2 == '#' || s2 == '@' && s1 == '#') {
            res = 20;
        } else {
            res = 5;
        }
        return res;
    }
}