declare -a array=()

while read r; do
array=("${array[@]}" "$r") # add array
done

declare -a patter=(${array[@]/*a*/})
declare -a patter1=(${patter[@]/*A*/})
echo ${patter1[@]}

array=( `cat` )
for i in ${!array[@]}; do
    if [[ ${array[$i]} =~ [aA] ]]; then
        unset array[$i]
    fi
done

echo ${array[@]}

readarray -t arr
filtered_arr=()
for element in "${arr[@]}"; do
    [[ "${element}" =~ [aA] ]] || filtered_arr+=("${element}")
done
echo ${filtered_arr[@]}