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#!/usr/bin/env -S nim r -d:release --verbosity:0 --hints:off
import std/[strutils]
proc countLetters(input, alphabet: string): int =
let uniq = block:
var tmp: set[char]
for c in alphabet:
if c notin Letters: continue
tmp.incl c
tmp
for c in input:
if c in uniq:
inc result
when isMainModule:
import std/unittest
const
Test = "chancellor"
Alphabet = "chocolate"
Expected = 8
suite "Stones and jewels alphabets":
test "Example 1":
check Test.countLetters(Alphabet) == Expected
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