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
<style> #tvkb { width : 400px; border: 5px solid gray; border-collapse: collapse; } #tvkb td { color : orange; background-color : black; text-align : center; border: 3px solid gray; border-collapse: collapse; } </style>| 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 | _ | / |
| aA | SP |
aAis the SHIFT key. Pressing this key toggles alpha characters between UPPERCASE and lowercaseSPis the space character- The other blank keys in the bottom row have no function
How many button presses on my remote are required to type the given words?
- The cursor always starts on the letter
a(top left) - The alpha characters are initially lowercase (as shown above)
- Remember to also press
OKto "accept" each letter - Take a direct route from one letter to the next
- The cursor does not wrap (e.g. you cannot leave one edge and reappear on the opposite edge)
- Although the blank keys have no function, you may navigate through them if you want to
- Spaces may occur anywhere in the
wordsstring. - Do not press the SHIFT key until you need to. For example, with the word
e.Z, the SHIFT change happens after the.is pressed (not before)
words = Code Wars
- C =>
a-f-k-p-u-aA-OK-U-P-K-F-A-B-C-OK = 14 - o =>
C-H-M-R-W-V-U-aA-OK-SP-v-q-l-m-n-o-OK = 16 - d =>
o-j-e-d-OK = 4 - e =>
d-e-OK = 2 - space =>
e-d-c-b-g-l-q-v-SP-OK = 9 - W =>
SP-aA-OK-SP-V-W-OK = 6 - a =>
W-V-U-aA-OK-u-p-k-f-a-OK = 10 - r =>
a-f-k-p-q-r-OK = 6 - s =>
r-s-OK = 2
Answer = 14 + 16 + 4 + 2 + 9 + 6 + 10 + 6 + 2 = 69