Your task is to calculate the total number of key-presses required to enter a given text on an old cellphone.
The keymaps are:
1:1
2:abcABC2
3:defDEF3
4:ghiGHI4
5:jklJKL5
6:mnoMNO6
7:pqrsPQRS7
8:tuvTUV8
9:wxyzWXYZ9
0:<space><newline>0
To type exaMPle TExt 01 , you would press 33 99 2 6666 77777 555 33 0 8888 33333 99 8 0 <a 1-sec pause here in real life but we'll ignore it>000 1 for a total of 37 keypresses.
The * key brings up a map of special characters:
.,'?!
"-()@
/:_;+
&%*=<
>£€$¥
¤[]{}
\~^¡¿
§#|`
with the first one (.) highlighted. You can move to highlight the required character using rectangular navigation keys and it takes another keypress to select.
So to insert $, you would press *↓↓↓↓→→→<select> i.e. a total of 9 key-presses.
- Input will be from a file called
sourceplaced in the current directory/directory of your program. EDIT: Per requests in comments, I'm addingSTDINas a valid input method. Apologies for changing the spec after receiving answers. - You must output
Total key presses <total_keypresses> - If the input file contains any character not in the given keymap, then your program must output
Invalid character <character> in sourceand exit.
In short, the input and output of your program must resemble that of this(ungolfed) python script:
# This Python file uses the following encoding: utf-8
from __future__ import print_function
import sys
general_dict = { '1':1,
'a':1, 'b':2, 'c':3, 'A':4, 'B':5, 'C':6, '2':7,
'd':1, 'e':2, 'f':3, 'D':4, 'E':5, 'F':6, '3':7,
'g':1, 'h':2, 'i':3, 'G':4, 'H':5, 'I':6, '4':7,
'j':1, 'k':2, 'l':3, 'J':4, 'K':5, 'L':6, '5':7,
'm':1, 'n':2, 'o':3, 'M':4, 'N':5, 'O':6, '6':7,
'p':1, 'q':2, 'r':3, 's':4, 'P':5, 'Q':6, 'R':7, 'S':8, '7':9,
't':1, 'u':2, 'v':3, 'T':4, 'U':5, 'V':6, '8':7,
'w':1, 'x':2, 'y':3, 'z':4, 'W':5, 'X':6, 'Y':7, 'Z':8, '9':9,
' ':1, '\n':2, '0':3
}
special_chars = ['.',',',"'",'?','!','"','-','(',')','@','/',':','_',';','+','&','%','*','=','<','>','£','€','$','¥','¤','[',']','{','}','\\','~','^','¡','¿','§','#','|','`']
for x in special_chars:
general_dict[x]=(special_chars.index(x)/5) + (special_chars.index(x)%5) + 2
key_press_total = 0
with open('source') as f: # or # with sys.stdin as f:
for line in f:
for character in line:
if character in general_dict:
key_press_total+=general_dict[character]
else:
print('Invalid character',character,'in source')
sys.exit(1)
print('Total key presses',key_press_total)
This is code-golf, shortest program in bytes wins.
Shameless disclaimer: I made this challenge to have translations of the above python script in different languages which will be used to score this challenge in the sandbox.
1ce5a2fdd0316e37c0a07d151d02db766a3adbb7. \$\endgroup\$