8
1
Introduction
You must create a function to convert Greek numerals into Arabic numerals. The input will be a Greek numeral less than 1000
and more than 0
. This is the reverse of my previous challenge.
Algorithm
- Split input into letters (e.g.
ΡΚΓ
->Ρ
,Κ
,Γ
) - Take each letter, and change to character found in table below, for letter symbol, (e.g.
ΡΚΓ
->Ρ
,Κ
,Γ
->100
,20
,3
). - Add (e.g.
ΡΚΓ
->Ρ
,Κ
,Γ
->100
,20
,3
->123
)
Specifications
- No built-in number-system conversion
- Input will be capitalized as in example.
- Output must be in base 10.
ΡΡΡΡ
will never happen. It will beΥ
.
Test Cases
ΡΚΓ -> 123
Η -> 8
ΨΟΖ -> 777
Ρ -> 100
ΧϜ -> 606
ΡϘ -> 190
ΜΒ -> 42
Ν -> 50
Table
Α = 1 = Alpha = 913 UTF-8
Β = 2 = Beta = 914 UTF-8
Γ = 3 = Gamma = 915 UTF-8
Δ = 4 = Delta = 916 UTF-8
Ε = 5 = Epsilon = 917 UTF-8
Ϝ = 6 = DiGamma = 988 UTF-8
Ζ = 7 = Zeta = 918 UTF-8
Η = 8 = Eta = 919 UTF-8
Θ = 9 = Theta = 920 UTF-8
Ι = 10 = Iota = 921 UTF-8
Κ = 20 = Kappa = 922 UTF-8
Λ = 30 = Lambda = 923 UTF-8
Μ = 40 = Mu = 924 UTF-8
Ν = 50 = Nu = 925 UTF-8
Ξ = 60 = Xi = 926 UTF-8
Ο = 70 = Omicron = 927 UTF-8
Π = 80 = Pi = 928 UTF-8
Ϙ = 90 = Koppa = 984 UTF-8
Ρ = 100 = Rho = 929 UTF-8
Σ = 200 = Sigma = 931 UTF-8
Τ = 300 = Tau = 932 UTF-8
Υ = 400 = Upsilon = 933 UTF-8
Φ = 500 = Phi = 934 UTF-8
Χ = 600 = Chi = 935 UTF-8
Ψ = 700 = Psi = 936 UTF-8
Ω = 800 = Omega = 937 UTF-8
Ϡ = 900 = SamPi = 992 UTF-8
Will we ever have input like
ΡΡΡΡ
? If so, what would the result be? – Conor O'Brien – 2016-04-22T16:06:24.510@CᴏɴᴏʀO'Bʀɪᴇɴ No. That would be Upsilon. – NoOneIsHere – 2016-04-22T16:18:11.163
Oh, I misunderstood the question, haha. – Conor O'Brien – 2016-04-22T16:21:24.440
@CᴏɴᴏʀO'Bʀɪᴇɴ I edited that spec in just now. You didn't miss it. – NoOneIsHere – 2016-04-22T16:22:25.747
1I think your test cases should cover all possible patterns of zeroes, so at least add something like
180
,42
and50
. – Martin Ender – 2016-04-22T16:46:37.770