Discussion on: Daily Challenge #2 - String Diamond

drawAsteriks () {
  local n=${2};
  local row=${1};
  local numberOfSpaces=$(( (${n}-${row}-(${row}-1))/2 ));
  local numberOfchars=$(( ${n} - ${numberOfSpaces#-}*2 ));
  local spaces=$(printf '%*s' ${numberOfSpaces} '');
  local chars=$(printf '%*s' ${numberOfchars} '' | tr ' ' '+');
  local result=${spaces}${chars}${spaces};
  echo "${result}";
}

if [[ $((${1} % 2 )) = 0 ]]; then
  echo "the argument is even: ${1}";
else 
  for (( i = 1; i <= ${1}; i++ )); do
    drawAsteriks ${i} ${1};
  done;
fi
echo'';