Spreadsheet | Topcoder Archive

Problem Statement

In all modern spreadsheet apps the columns are labelled using strings of uppercase English letters. From the left to the right, the labels look as follows:

First, there are all 26 possible 1-letter labels, in alphabetical order: "A", "B", "C", ..., "Y", "Z".
Then, there are all 26^2 possible 2-letter labels, in alphabetical order: "AA", "AB", "AC", ..., "AY", "AZ", "BA", "BB", ..., "ZX", "ZY", "ZZ".
Then, there are all 26^3 possible 3-letter labels, in alphabetical order: everything from "AAA" to "ZZZ".
Afterwards, there are all possible labels with 4, 5, 6, ... letters.

You are given the String column: the label of a column in a spreadsheet.

Return the label of the column that is immediately to the right of the given column.

Definition

Class:: Spreadsheet
Method:: goRight
Parameters:: String
Returns:: String
Method signature:: String goRight(String column)
(be sure your method is public)

Constraints

column will contain between 1 and 10 characters, inclusive.
Each character of column will be an uppercase English letter ('A'-'Z').

Examples

```
"SRM"
```
```
Returns: "SRN"
```
```
"Z"
```
```
Returns: "AA"
```
The column "Z" is the last column with a one-letter name. The next column is the first column with a two-letter name: "AA".
```
"TOPCODER"
```
```
Returns: "TOPCODES"
```
```
"WALTZ"
```
```
Returns: "WALUA"
```

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