Kata

Task

Amirhossein is a painter who also loves pets. He has just bought a python snake, and would love to draw a picture of it. Now the snake is lying curled up, and Amirhossen wants to draw it using the smallest canvas possible.

Write a function that draws the python according to the following rules:

- The snake's picture should be returned as a rectangular matrix, 
  where 'H' is its head, 'T' is its tail, and 'x' is a part of its
  body. Other elements of the matrix should be filled with ' '.
- The snake's body consists of several parts. Their lengths are 
  stored in the array body. The first element of the array starts 
  with the snakes head and goes from left to right (snake's head to
  the left), the second part goes from right to left, the third one
  from left to right again, and so on.
- The drawing shouldn't contain empty lines or empty columns 
  (i.e. rows or columns that consist only of ' ').

Input/Output

• [input] integer array body

  The length of each part of pet's body.

  2 <= body.length <= 100

  1 <= body[i] <= 100

• [output] a string array

  Picture of the pet as a matrix of chars.

Example

For body = [1, 2, 3], the output should be:

[
[' ', 'H', ' '],
['x', 'x', ' '],
['x', 'x', 'T']
]

Here's how a professionally drawn python would look like: