ouchi > Practice > Study04-07

import java.util.Scanner;
 
public class Study04_07 {
 
	public static void main(String[] args) {
 
		Scanner scan = new Scanner(System.in);
		System.out.println("任意の文字列を入力してください");
		String inStr = scan.nextLine();
 
		char[] buf = inStr.toCharArray();
		for (int i = 0; i < buf.length; i++) {
			if (buf[i] == '#') {
				break;
			}
			if ('A' <= buf[i] && buf[i] <= 'Z') {
				buf[i] = (char) (buf[i] - 'A' + 'a');
			} else if ('0' <= buf[i] && buf[i] <= '9') {
				buf[i] = (char) ('9' - buf[i] + '0');
			}
		}
 
		for (char el : buf) {
			System.out.print(el);
		}
		System.out.println();
 
	}
 
}