--Parse the input into a table
input = io.read("*a")
ListOfNames = {}

for i in input:gmatch("[^\r\n]+") do
  table.insert(ListOfNames,i)
end

--Global Varriables list
TotalNice = 0
TotalNaughty = 0

--Functions

function VowelCheck(str) --check to make sure there are at least 3 vowels ex: "aea" or "oui" would return true where "oux" would not
  
  --local vFound = {}
  local totalV = 0
  
  for v in str:gmatch("[aeiou]") do
    --vFound[v] = true 
    totalV = totalV + 1
  end
  
  --[[for i in pairs(vFound) do
    totalV = totalV + 1
  end]]
  
  if totalV >= 3 then
    return true
  else
    return false
  end
  
end

function repeatCheck(str) --looks for at least 1 repeated charecter set ex: "aa" or "zz" would return true where "zxz" would return false
  
  local lastLetter = ""
  local c = ""
  
  for i = 1, #str do
    
    c = str:sub(i,i) 
    
    if lastLetter == c then
      return true
    end
    
    lastLetter = c
    
  end
  
  return false
  
end

function findNaughtyStrings(str) --looks for the presence of "naughty" strings. returns true if found false if not
  
  local xStrings = {"ab", "cd", "pq", "xy"}
  
  for i,x in ipairs(xStrings) do
    if string.find(str, x) then
      return true
    end
  end

  return false
  
end

function masterCheck(str) --function to call all the checks. may be unnessacary, seemed like a good idea at the time.
  
  local isNice = 0
  
  if VowelCheck(str) == true then
    isNice = isNice + 1
  end
  
  if repeatCheck(str) == true then
    isNice = isNice + 1
  end
  
  if findNaughtyStrings(str) == false then
    isNice = isNice + 1
  end
  
  if isNice == 3 then
    return true
  else
    return false
  end
  
end

--Funtional loop

for i, name in ipairs(ListOfNames) do
  
  if masterCheck(name) == true then
    TotalNice = TotalNice + 1
  else
    TotalNaughty = TotalNaughty + 1
  end

end

--Output

print("The list contains ".. TotalNice.. " nice, and ".. TotalNaughty.. " naughty strings.")



--error checking
--[[for i, s in ipairs(ListOfNames) do
  print(s)
end]]
by

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name = io.read("*a")
print ("Hello ", name)

About Lua

Lua is a light weight embeddable scripting language which is built on top of C. It is used in almost all kind of applications like games, web applications, mobile applications, image processing etc. It's a very powerful, fast, easy to learn, open-source scripting language.

Syntax help

Variables

  • By default all the variables declared are global variables
  • If the variables are explicitly mentioned as local then they are local variables.
  • Lua is a dynamically typed language and hence only the values will have types not the variables.

Examples

-- global variables
a = 10

-- local variables

local x = 30
Value TypeDescription
numberRepresents numbers
stringRepresents text
nilDifferentiates values whether it has data or not
booleanValue can be either true or false
functionRepresents a sub-routine
userdataRepresents arbitary C data
threadRepresents independent threads of execution.
tableCan hold any value except nil

Loops

1. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition)
do
--code
end

2. Repeat-Until:

Repeat-Until is also used to iterate a set of statements based on a condition. It is very similar to Do-While, it is mostly used when you need to execute the statements atleast once.

repeat
   --code
until( condition )

3. For:

For loop is used to iterate a set of statements based on a condition.

for init,max/min value, increment
do
   --code
end

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increase re-usuability and modularity.

optional_function_scope function function_name( argument1, argument2, argument3........, argumentn)
--code
return params with comma seperated
end