如何在bash中从列表中获取每三分之一和每四分之一的元素？

I have next list in my script

我的脚本中有下一个列表

....
declare -a Issues=('DPTESTXXXX-15-' 'DPTESTXXXX-16-' 'DPTESTXXXX-17-' 'DPTESTXXXX-18-' 'DPTESTXXXX-19-' 'DPTESTXXXX-20-' 'DPTESTXXXX-21-' 'DPTESTXXXX-22-' 'DPTESTXXXX-23-' 'DPTESTXXXX-24-' 'DPTESTXXXX-25-' 'DPTESTXXXX-26-' 'DPTESTXXXX-27-' 'DPTESTXXXX-28-');
for i in ${Issues[@]}; do
    git checkout -b "$i"'do-this-rc1'    
    ....
done
.