题解 | #字符串加解密#
字符串加解密
https://www.nowcoder.com/practice/2aa32b378a024755a3f251e75cbf233a
//闭眼暴力写
//需要注意的只有一个，就是1-9不能直接用char去强制转换
//但是我想不起来用啥int转char了，就用了这个to_string，不得不说atoi啥的记不住
#include <string>
#include <iostream>using namespace std;
int main() {
string inputstrCode,inputstrUnCode;
getline(cin,inputstrCode);
getline(cin,inputstrUnCode);
for(int i = 0;i<inputstrCode.size();++i){
if(int(inputstrCode[i]) >= 65 && int(inputstrCode[i]) <= 90){
if(int(inputstrCode[i]) == 90)inputstrCode[i] = 'a';
else inputstrCode[i] = char(int(inputstrCode[i])+33);
}
else if(int(inputstrCode[i]) >= 97 && int(inputstrCode[i]) <= 122){
if(int(inputstrCode[i]) == 122)inputstrCode[i] = 'A';
else inputstrCode[i] = char(int(inputstrCode[i])-31);
}
else if((inputstrCode[i]-'0')>= 0 && (inputstrCode[i]-'0')<= 9){
if((inputstrCode[i]-'0')== 9)inputstrCode[i] = '0';
else inputstrCode[i] = to_string(int(inputstrCode[i]-'0')+1)[0];
}
}
cout << inputstrCode << endl;
for(int i = 0;i<inputstrUnCode.size();++i){
if(int(inputstrUnCode[i]) >= 65 && int(inputstrUnCode[i]) <= 90){
if(int(inputstrUnCode[i]) == 65)inputstrUnCode[i] = 'z';
else inputstrUnCode[i] = char(int(inputstrUnCode[i])+31);
}
else if(int(inputstrUnCode[i]) >= 97 && int(inputstrUnCode[i]) <= 122){
if(int(inputstrUnCode[i]) == 97)inputstrUnCode[i] = 'Z';
else inputstrUnCode[i] = char(int(inputstrUnCode[i])-33);
}
else if((inputstrUnCode[i]-'0')>= 0 && (inputstrUnCode[i]-'0')<= 9){
if((inputstrUnCode[i]-'0')== 0)inputstrUnCode[i] = '9';
else inputstrUnCode[i] = to_string(int(inputstrUnCode[i]-'0')-1)[0];
}
}
cout << inputstrUnCode << endl;
return 0;
}
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