#!/bin/bash

string=(0 10 20 30 40)
add_string=(10 5 35 45 50)

for A in ${add_string[@]}; do
    SAME=0
    max=0
    for S in ${string[@]}; do
        if [ "$A" = "$S" ]; then
            SAME=1
            shift
        fi
        if [ "$A" -gt "$S" ]; then
            max=$(($max + 1))
        fi
    done

if [ "$SAME" = 0 ]; then
    newstring=(${string[@]:0:$max} $A ${string[@]:$max})
    string=(${newstring[@]})
fi

done

echo ${string[@]}

exit 0