How to delete a specific fragment from back stack in android

Question

I have a problem about removing a specific fragment from back stack.My scenario is like this.Fragment-1 is replaced with Fragment-2 and then Fragment-2 is replaced with Frag

Answer 1

   for (int i = 0; i < mFragmentManager.getBackStackEntryCount(); i++) {
        currentFragment = mFragmentManager.getFragments().get(i);
        if (!(currentFragment instanceof ParticularFragment))
            mFragmentManager.popBackStack();
        else
            break;
    }