[Leetcode] Excel Sheet Column Title

Problem Description:

Given a positive integer, return its corresponding column title as appear in an Excel sheet.

For example:

    1, A    2, B    3, C    ...    AA, Z        

Basic ideas:

This question at first glance, very simple, but the program once passed but not easy, there are some easy to ignore points.  (in the case of a program) if the z is processed, when the map is saved, it should be 0 for the remainder of 26. Also, be aware that n = n/26 is an error when updating N. It is also because n = 26 o'clock does not need to enter the round cycle.

Code:

Public String converttotitle (int n) {  //java        map<integer,character> Map = new Hashmap<integer, Character> ();        for (int i = 1; i<=; i++) {            Integer key = i%26;            Character value = (char) (64+i);            Map.put (Key,value);                    }                String result = "";        while (n!=0) {            int tmp = N%26;            result = Map.get (TMP) + result;            n = (n-1)/26;        }        return result;            }

[Leetcode] Excel Sheet Column Title