啊哈添柴——挑戰
1072. 數字加密
import java.util.Scanner;
/**
* @author yinglongwu
*/
//1072. 數字加密
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String string = scanner.nextLine();
char[] cArr = string.toCharArray();
for (int i = 0; i < cArr.length; i++) {
if ('a'<=cArr[i]&&cArr[i]<='w') {
cArr[i] = (char)(cArr[i]+3);
}else if('x'<=cArr[i]&&cArr[i]<='z'){
cArr[i] = (char)(97+(cArr[i]%120));
}else if('A'<=cArr[i]&&cArr[i]<='W'){
cArr[i] = (char)(cArr[i]+3);
}else if('X'<=cArr[i]&&cArr[i]<='Z'){
cArr[i] = (char)(65+(cArr[i]%'X'));
}
System.out.print(cArr[i]);
}
}
}
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