First set a counter i to 0. Now we perform the following steps repeatedly until i is equal to n.

Heap's algorithm generates all possible permutations of n objects.

It generates each permutation from the previous one by interchanging a single pair of elements; the other n-2 elements are not disturbed

We use the algorithm to generate the (n-1)! permutations of the first n-1 elements, adjoining the last element to each of these.

Thus we generate all of the permutations that end with the last element.

Then if n is odd, we switch the first element and the last one.

If n is even, we switch the i-th element with the last one.

Note that there's no difference between n even and n odd in the first iteration.

Now we add one to the counter i and repeat.

In each iteration, the algorithm will produce all of the permutations that end with the element that has just been moved to the "last" position.

Being on 'The Vampire Diaries' feels almost like a game you play when you're a kid. When I was a kid, I used to have to take the garbage out at night on Wednesdays. I lived out in the country. I'd take the garbage out, and I used to pretend that I was the only person in the whole world, except for one other person, and he was looking for me.

I enjoy seeing new places.

I, like many women, buy into patriarchal standards of beauty every day. I very rarely leave the house without make-up. I dye my hair. I wear clothes that I choose carefully for how they make me look to the outside world.

Now Mayweather has retired, Alavrez is the biggest name in boxing, and I'm looking forward to pitting my wits against him.

I think if people value democracy, they had damn well better get out and exercise their right to vote while their vote still means something.

Corruption is not a problem just for some countries; this is a global issue.

Aamir once went behind a rock to cry because his director didn't listen to what he was saying.

The alchemists in their search for gold discovered many other things of greater value.

The greenest home is the one you don't build. If you really want to save the Earth, move in with another family and share a house that's already built. Better yet, live in the forest and eat whatever the squirrels don't want.

The better I get to know men, the more I find myself loving dogs.

Art speaks where words are unable to explain

I've tried, in 'Bloodmoney,' to tell a story that gets at the crazy relationship between the ISI and the CIA, these absolutely fascinating, often mutually destructive two scorpions in a bottle kind of relationship that they have.

As soon as someone tells me: 'You're rather sexy,' I wish I could disappear. If somebody says: 'You were voted the world's sexiest man,' I have no idea what that means. How do I respond? 'Thank you' is the best you can do. George Clooney is the world's sexiest man, anyway.

I'm not in a position where I get to pick and choose roles. I usually go on auditions in long lines and embarrass myself in front of casting directors, and with a lump in my throat and my ears burning, I walk past reception and smirking actors as I go to the parking garage and go back on the highway.

The Governor's Office is going to get out of the litigation business.

'Entourage' is a staple L.A.-based show, and people say it's pretty real, and I thought it was. It's an exaggeration of the truth.

I love all kinds of music. My dad's from London, so he loves David Bowie, the Stones, The Clash. I grew up with that influence while loving poetry and loving all kinds of current music.

Fashion has two purposes comfort and love. Beauty comes when fashion succeeds.

Caretaking is different from care giving. Care giving has no second agendas or hidden motives. The care is given from love for the joy of giving without expectation, no strings attached. It cannot be manipulated or discouraged because love cannot be manipulated or discouraged.

Physical ills are the taxes laid upon this wretched life some are taxed higher and some lower but all pay something.

If you put a camera on the wall, you would laugh at some of the fights me and my brothers had.

Freaky things happen all the time in the world. I suppose everything has to happen for the first time at some point.

I think I'll always be famous. I just hope I don't become infamous.

In a way, cancer is so simple and so natural. The older you get, this is just one of the things that happens as the clock ticks.