loop for bash code example

Example 1: for loop in shell script

for i in {1..5}
do
   echo "Welcome $i times"
done

Example 2: loop bash

years=(2018 2019)
days=(74 274)

for year in "${years[@]}"; do
    for day in $(seq -w ${days[0]} ${days[1]}); do
               echo $year
               echo $day
    done
done