[자바스크립트로 구현한 알고리즘] Get the Middle Character

You are going to be given a word. Your job is to return the middle character of the word. If the word's length is odd, return the middle character. If the word's length is even, return the middle 2 characters.

Examples:

Kata.getMiddle("test") should return "es"

 

Kata.getMiddle("testing") should return "t"

 

Kata.getMiddle("middle") should return "dd"

 

Kata.getMiddle("A") should return "A"

Input

A word (string) of length 0 < str < 1000

Output

The middle character(s) of the word represented as a string.