Java回文數的判斷與生成

判斷是不是回文數

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	public static void PJ() {
		Scanner sc = new Scanner(System.in);
		System.out.println("請輸入一個整數:");
		int num = sc.nextInt();
		String s = num+"";
		String s1 ="";
		for (int i = s.length()-1; i>=0; i--) {
			s1+=s.charAt(i);
		}
		if (s.equals(s1)) {
			System.out.println("是回文數");
		}else {
			System.out.println("不是回文數");
		}
	}

生成回文數

	public static void generate() {
		Scanner sc = new Scanner(System.in);
		System.out.println("請輸入一個整數:");
		int num = sc.nextInt();
		String s = num+"";
		String s1="";
		for (int i = s.length()-1; i>=0; i--) {
			s1+=s.charAt(i);
		}
		System.out.println("它的回文數是"+s1);
	}