#!/bin/bash

letters="A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"

for i in $letters; do
  mkdir -p $i
  mv $i*.zip $i
done

mkdir -p numbers
numbers="0 1 2 3 4 5 6 7 8 9"
for i in $numbers; do
  mv 0*.zip numbers
  mv $i*.zip numbers
done