华为0506笔试题第二题HashMap+裁剪

import java.io.BufferedInputStream;

import java.io.InputStream;

import java.util.HashMap;

import java.util.Map;

import java.util.Scanner;

// !+! =0 !+@=13 !+#=4 @+@=7 @ +# =20 #+#=5

public class Main {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

int a = scanner.nextInt();

String str = scanner.next();

String[] split = str.split("\\+");

// System.out.println(split[0]);

String str1 = split[0] ,str2 = split[1];

a = str.length();

int len1 = str1.length(),len2 = a -1- len1;

int len_f1 =str1.split("\\.")[0].length();

int len_f2 = str2.split("\\.")[0].length();

int len_a1 = len1-1-len_f1, len_a2 = len2 -1-len_f2;

System.out.println(len_f1+" "+len_f2+" "+len_a1+" "+len_a2);

StringBuilder sb1 = new StringBuilder(str1),sb2 = new StringBuilder(str2);

if(len_a1==-1){

len_f1++;len_a1++;

sb1.append(".");

}

if(len_a2==-1){

len_f2++;len_a2++;

sb2.append(".");

}

while(len_a1 != len_a2){

while(len_a1<len_a2){

sb1.append(0);

len_a1++;

}

while(len_a1>len_a2){

sb2.append(0);

len_a2++;

}

}

while (len_f1!=len_f2){

while(len_f1<len_f2){

sb1.insert(0,"0");

len_f1++;

}

while(len_f1>len_f2){

sb2.insert(0,"0");

len_f2++;

}

}

// System.out.println(sb1+" "+sb2);

StringBuilder sb = new StringBuilder();

sb1 =sb1.reverse();

sb2 = sb2.reverse();

int flag = 0;int cur = 0;

Map<String,Integer> map = new HashMap<>();

map.put("!!",0);map.put("!@",13);map.put("!#",4);

map.put("@@",7);map.put("@#",20);map.put("##",5);

for(int i=0;i<sb1.length();i++){

char ch = sb1.charAt(i);

if(ch=='.'){

sb.append(".");

}else{

if(ch=='!'||ch =='@'||ch=='#'){

String s= ch+""+sb2.charAt(i);

String s1= sb2.charAt(i)+""+ch;

if(map.containsKey(s)){

cur = map.get(s);

}else{

cur = map.get(s1);

}

}else{

cur =ch-'0'+sb2.charAt(i)-'0';

}

// System.out.println(cur);

cur = cur +flag;

flag=cur/10;

cur = cur%10;

sb.append(cur);

}

}

if(flag!=0){

sb.append(flag);

}

while(sb.charAt(0)=='0'){

sb.deleteCharAt(0);

}

while(sb.charAt(sb.length()-1)=='0'){

sb.deleteCharAt(sb.length()-1);

}

System.out.println(sb.reverse());

}

// !+! =0 !+@=13 !+#=4 @+@=7 @ +# =20 #+#=5

}