如何在Java中删除字符串中的相邻重复项

public class RemoveDuplicates {
    public static void main(String[] args) {
        String str = "abbaca";
        String result = removeAdjacentDuplicates(str);
        System.out.println(result); // 输出 "ca"
    }
    
    public static String removeAdjacentDuplicates(String str) {
        StringBuilder sb = new StringBuilder();
        
        for (char c : str.toCharArray()) {
            int length = sb.length();
            
            // 检查StringBuilder的末尾字符是否与当前字符相同
            if (length > 0 && sb.charAt(length - 1) == c) {
                sb.deleteCharAt(length - 1); // 删除相同的字符
            } else {
                sb.append(c); // 添加不同的字符
            }
        }
        
        return sb.toString();
    }
}