华为机试(字符串消消乐---Java实现)

import java.util.Scanner;

public class XiaoXiaoLeaboutString {
    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();

        StringBuffer stringBuffer = new StringBuffer();
        for (int i = 0; i < s.length() - 1; i++) {
            //如果字符串是loolmnihao,为了使得第二次能检测到ll所以得加这步
            //第二次不会比较前两个字符因此先判断前两个字符是否相等，相等的话用字符串截取即可
            if (s.charAt(0) == s.charAt(1)) {
                s = s.substring(2);
            }
            if (s.charAt(i) == s.charAt(i + 1)) {
                stringBuffer.append(s.charAt(i));
                stringBuffer.append(s.charAt(i + 1));
                String replace = s.replace(stringBuffer.toString(), "");
                s = replace;
                i = 0;
                //清空stringbuffer
                stringBuffer.delete(0, stringBuffer.length());
            }
        }
        //System.out.println(s);
        System.out.println(s.length());
    }
}