LeetCode 71 - Simplify Path

Given an absolute path for a file (Unix-style), simplify it.

For example,
path = 

"/home/"

"/home"

"/a/./b/../../c/"

"/c"

• Did you consider the case where path = 

  "/../"

  ?
  In this case, you should return 

  "/"

  .
• Another corner case is the path might contain multiple slashes 

  '/'

   together, such as 

  "/home//foo/"

  .
  In this case, you should ignore redundant slashes and return 

  "/home/foo"

  .

public String simplifyPath(String path) {
String[] paths = path.split("\\/+");
Stack<String> stack = new Stack<>();
for(String p:paths) {
if(p.isEmpty() || p.equals(".")) continue;
if(p.equals("..")) {
if(!stack.isEmpty()) stack.pop();
} else {
stack.push(p);
}
}
if(stack.isEmpty()) return "/";
String s = "";
while(!stack.isEmpty()) {
s = "/"+stack.pop()+s;
}
return s;
}