queue and stack using array

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From the computer of: hpx (3 recipes)
Created: Jun 08, 2005


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here is a series of operation on array, we can use these functions to implement a queue or stack that can help us more

push:
array=("${array[@]}" $new_element)

pop:
array=(${array[@]:0:$((${#array[@]}-1))})

shift:
array=(${array[@]:1})

unshift
array=($new_element "${array[@]}")

function del_array {
local i
for (( i = 0 ; i < ${#array[@]} ; i++ ))
do
if [ "$1" = "${array[$i]}" ] ;then
break
fi
done
del_array_index $i
}

function del_array_index {
array=(${array[@]:0:$1} ${array[@]:$(($1 + 1))})
}

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