Given an absolute path for a file (Unix-style), simplify it.
For example,
path = "/home/", => "/home"
path = "/a/./b/../../c/", => "/c"
1,java里string的函数split可以用来拆分string。拆分之后放入数组里
2，stringbuffer 的insert功能
3. 记得string 只能用equal
public class Solution {
public String simplifyPath(String path) {
Stack<String> store= new Stack<String>();
StringBuffer result=new StringBuffer();
String[] temp=path.split("/");
for(int i=0;i<temp.length;i++){
if(temp[i].equals(".")){
continue;
}
else if(temp[i].equals("..")){
if(!store.isEmpty()){
store.pop();
}
}
else if(!temp[i].isEmpty()){
store.push(temp[i]);
}
}
while(!store.isEmpty()){
result.insert(0,"/"+store.pop());
}
if(result.length()==0){
result.append("/");
}
return result.toString();
}
}
原文：http://www.cnblogs.com/lilyfindjobs/p/4100946.html