Duplicate Character Counter in Lua

Welcome to the Duplicate Character Counter in Lua page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

function duplicateCharacterCounter(word)
  local hasDuplicates = false;

  -- Empty or no input validation
  if word == "" or word == nil then 
    print("Usage: please provide a string")
    return

  -- Check for duplicates validation
  elseif (string.len(word) >= 1) then
    local myTable = {}
    local duplicateList = {}
    
    for i=1, string.len(word) do
      local char = string.sub(word, i, i)
      if (myTable[char]) then
        myTable[char] = myTable[char]+1
        hasDuplicates = true

      else
        myTable[char] = 1;
        table.insert(duplicateList, char)
      end
    end
    for _, char in ipairs(duplicateList) do
        if myTable[char] > 1 then
            print(char .. ": " .. myTable[char])
        end
    end
  end

  -- No duplicates validation
  if not (hasDuplicates) then
    print("No duplicate characters")
  end
end

duplicateCharacterCounter(arg[1])

Duplicate Character Counter in Lua was written by:

• abdirashidexe

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.