all.nim

# Naive
proc containsAll(letters, text: string): bool =
  for c in letters:
    if c notin text:
      return false
  return true

# Only check each letter once
proc containsAll2(letters, text: string): bool =
  var chars: set[char]
  for c in letters:
    if c notin chars:
      if c notin text:
        return false
      chars.incl(c)
  return true

echo containsAll("aaa", "asd")
echo containsAll("bbb", "asd")

echo containsAll2("aaa", "asd")
echo containsAll2("bbb", "asd")