java leetcode 71简化Linux路径

Posted 2021-05-07

public static String simplifyPath(String s){
	    if(s==null || s.length()==0) return "";
	    String[] s_arr = s.split("/");
	    System.out.println(s_arr.length);
	    Stack<String> stack = new Stack<String>();
	    for(String str : s_arr){
	        if(str.equals(" ") || str==null || str.equals(".") || str.equals("")) continue;
	        if(str.equals("..") && !stack.isEmpty()) {stack.pop();continue;}
	        stack.push(str);
	    }
	    return "/"+String.join("/",stack);
	}