Shell Programming and Scripting

Hi,
I'm wondering if there's a way to dump the content of an array into a specified part of a file.
I know that I can redirect the output in a way that the array adds in the text file, this is done with ">>", but doing by this way, puts the array at the end of the file, and I'm asking for some that make something like this:
#text file
something
another thing
one more thing

<put array here>

other thing
more things
#End of text file

array[1]=20501 string;
array[2]=20502 string;
etc..

Doing with ">>" results on:
#text file
something
another thing
one more thing

<put array here>

other thing
more things
20501 string;
20502 string;
etc..
#End of text file

And I want:
#text file
something
another thing
one more thing

20501 string;
20502 string;
etc..

other thing
more things
#End of text file

for line in `cat algo.txt`
do
echo "$line" >> algo.txt.app.tmp
if [ $line = OTHER ]; then
OTHER_FLAG=1
fi
if [ $OTHER_FLAG = 1 && $line = "" ]; then
for ins in ${ins_array[*]}
do
echo " $ins SOCKETED;" >> algo.txt.app.tmp
done
OTHER_FLAG=0
fi
done

I also try with AWK, but it doesn't accept array when you are passing parameters.

awk '{
print $0
if ( $1 == "OTHER" )
{
OTHER_FLAG = 1
}
if ( OTHER_FLAG && $0 = "" )
{
for ( i = 0; i <= array_size; i++ )
{
printf (" %6s SOCKETED;", array[i])
}
OTHER_FLAG = 0
}
}' array=${ins_array[*]} array_size=$ins_array_size algo.txt > algo.txt.ap
p.tmp

ins_array_count=1
while [ $ins_array_count -le $ins_array_size ]
do
ins_val=${ins_array[$ins_array_count]}
awk '{
print $0
if ( $1 == "OTHER" )
{
OTHER_FLAG = 1
}
if ( OTHER_FLAG && $0 == "" )
{
printf (" %6s SOCKETED;\n", ins_val)
OTHER_FLAG = 0
}
}' ins_val=$ins_val algo.txt > algo.txt.app.tmp
ins_array_count=`expr $ins_array_count + 1`
cp algo.txt.app.tmp algo.txt
done