public class driver {
	public static void main(String[] args)throws Exception {
		String str;
		char sigle;
		CharacterStack stack = new CharacterStack();
		stack.initialize();
		System.out.print("要判斷括號串是否有效（y/n）： ");
		sigle=BasicIo.readCharacter();
		while(sigle=='y')
		{
		System.out.print("請輸入要判斷的括號串： ");
		str=BasicIo.readString();
		//str.toCharArray()將輸入的字符轉化為字符數組
		if(stack.chack(str.toCharArray(),str.length()))	
			System.out.println("被檢測的括號是有效的!");
		else	
			System.out.println("被檢測的括號是無效的!");	
		System.out.print("是否要繼續判斷括號串是否有效（y/n）： ");
		stack.initialize();
		sigle=BasicIo.readCharacter();
		}

	}

}