Homework & Coursework Questions

while [ 1 -eq 1 ] 
do

declare -a num
num=("3" "4" "1" "8" "2" "9" "7")
limit="`echo ${#num[@]}`"
check=0
i=0
while [ $i -lt $limit ]
do 
if [ $check -lt ${num[$i]} ]; then 
check="`echo ${num[$i]}`"
fi 
let i=i+1 
done 
echo "Largest number is:$check"

declare -a num
num=("3" "4" "1" "7" "2" "9" "10" "5")
limit="`echo ${#num[@]}`"
check=`expr $limit % 2`
if [ $check -eq 1 ];then
#Number count is odd 
# median
declare -a tmp_num 
tmp_num=(`for ((i=0;i<$limit;i++));do echo "${num[$i]}"; done | sort -n`)
med_pos=`expr $limit - 1`
med_posf=`expr $med_pos / 2`
echo "Median is:${tmp_num[$med_posf]}"
elif [ $check -eq 0 ];then
#number count is even
#median
declare -a tmp_num 
tmp_num=(`for ((i=0;i<$limit;i++));do echo "${num[$i]}"; done | sort -n`)
med_posx=`expr $limit / 2`
med_pos1=`expr $med_posx - 1`
med_pos2=`expr $med_pos1 + 1`
med_tmp=`expr ${tmp_num[$med_pos1]} + ${tmp_num[$med_pos2]}`
medf=`echo "scale = 2; $med_tmp / 2"| bc`
echo "Median is:$medf"
fi

echo $SHELL