Strip all content but day-Week-num from files or folders

DayWeekNum_strip_extra.sh

#!/bin/bash

# Create an array of the strings we want to remove
remove_string=();

# CAUTION: using * grabs all files and folder in current directory
# you've been warned
for i in *
do
    a=$((a+1)); #counts up
    
    #echo first when testing
    echo ${remove_string[$a]=${i/([0-9][0-9]_Week_[0-9])/}};
    #then comment above, uncomment below
    #${remove_string[$a]=${i/([0-9][0-9]_Week_[0-9])/}};
    
    #same as before
    echo mv $i ${i/$remove_string[$a]/};
    #mv $i ${i/$remove_string[$a]/};
done