Background

My TV remote control has arrow buttons and an OK button.

I can use these to move a "cursor" on a logical screen keyboard to type "words"...

The screen "keyboard" layout looks like this

a	b	c	d	e	1	2	3
f	g	h	i	j	4	5	6
k	l	m	n	o	7	8	9
p	q	r	s	t	.	@	0
u	v	w	x	y	z	_	/

Kata task

How many button presses on my remote are required to type a given word?

Notes

• The cursor always starts on the letter a (top left)
• Remember to also press OK to "accept" each character.
• Take a direct route from one character to the next
• The cursor does not wrap (e.g. you cannot leave one edge and reappear on the opposite edge)
• A "word" (for the purpose of this Kata) is any sequence of characters available on my virtual "keyboard"

Example

word = codewars

• c => a-b-c-OK = 3
• o => c-d-e-j-o-OK = 5
• d => o-j-e-d-OK = 4
• e => d-e-OK = 2
• w => e-j-o-t-y-x-w-OK = 7
• a => w-r-m-h-c-b-a-OK = 7
• r => a-f-k-p-q-r-OK = 6
• s => r-s-OK = 2

Answer = 3 + 5 + 4 + 2 + 7 + 7 + 6 + 2 = 36

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*Good Luck!
DM.*

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Series

• TV Remote
• TV Remote (shift and space)
• TV Remote (wrap)
• TV Remote (symbols)