如何只输出一次不重复输出

Question

import java.util.Arrays;
import java.util.Scanner;

public class p1 {
	public static void main(String[] args) {

		System.out.print("请输入需要判断的:");
		Scanner sc = new Scanner(System.in);
		String testStr = sc.next();

		char[] test = testStr.toCharArray();
		for (char c : test) {
			if (Character.isDigit(c)) {
				Arrays.sort(test);
				output(test);
			} else if (Character.isLetter(c)) {
				output1(test);
			}
		}
	}

	public static void output(char[] a) {
		System.out.print("结果:");
		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i] + " ");
		}
		System.out.println();
	}
	public static void output1(char[] a){
		System.out.print("结果:");
		for(int j=0;j<a.length;j++){
          System.out.print(a[a.length-1-j]+" ");
      }
		System.out.println();
	}

}

Answer 1

 
import java.util.Arrays;
import java.util.Scanner;
public class p1 {
	public static void main(String[] args) {
		System.out.print("请输入需要判断的:");
		Scanner sc = new Scanner(System.in);
		String testStr = sc.next();
		char[] test = testStr.toCharArray();
		for (char c : test) {
			if (Character.isDigit(c)) {
				Arrays.sort(test);
				output(test);
                break;
			} else if (Character.isLetter(c)) {
				output1(test);
                break;
			}
		}
	}
	public static void output(char[] a) {
		System.out.print("结果:");
		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i] + " ");
		}
		System.out.println();
	}
	public static void output1(char[] a){
		System.out.print("结果:");
		for(int j=0;j<a.length;j++){
          System.out.print(a[a.length-1-j]+" ");
      }
		System.out.println();
	}
}

加break;跳出循环