Given an absolute path for a file (Unix-style), simplify it.
For example,
path = "/home/", => "/home"
path = "/a/./b/../../c/", => "/c"
click to show corner cases.
Corner Cases:"/../"?"/".'/' together,
such as "/home//foo/"."/home/foo".
public class Solution {
public String simplifyPath(String path) {
Stack stack = new Stack<>();
for(int i=0;i