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.

My cheat meals aren't even that exciting.

We were birthed with one soul to take care of, and we must take care of it.

There will come a day when the phone doesn't ring as much as it used to.

The actual danger is nothing, and the positive advantages very great.

Musically, swing pretty much dominated in the '30s. And into the late '30s, swing is beginning to change over to bebop in the early '40s, which is exactly when this new science of theoretical physics, particularly theoretical atomic physics, was really coming to the fore.

When you have these big, strong power hitters who can hit the ball a country mile, and they're strong for a reason and able to do that, as a pitcher you have to keep up.

You'd save millions upon millions of lives by making fossil fuels available to parts of the world that don't have it.

And so the idea was, well maybe you can take an Atari video game machine, where people plug in a game cartridge, and plug in a modem, and tie that into a telephone, and essentially turn that game in the machine into an interactive terminal.

I converted Dec. 31, 1999. It was a Friday. That was my second time going to the mosque. The woman who is my wife now... was basically raised Muslim - and she was at that point where she was deciding or trying to come to terms with her own relationship with Islam and how to embrace that for herself.

I gravitated to economics because I'm interested in how people coordinate and collaborate with each other. Economics studies all the ways people get along with each other.

I think the moment you start trying to please a fan base is when you start going downhill. I'm going to always, always write about what I want, even if it doesn't necessarily cater to most of them.

Man... cannot learn to forget but hangs on the past however far or fast he runs that chain runs with him.

I like to compare 'Instagram' to the Library of Congress.

I feel like God has forgiven me of so much that I will forgive everyone who has hurt us.

In every seed of good there is always a piece of bad.

Since 2002, there has been a wave of attacks against Jewish 'persons or property' in France, a great many of them committed by young men living outside Paris, in the vast ghettos called les banlieues.

A house is made with walls and beams. A home is made with love and dreams.

I'm a big fan of Alan J. Pakula's films like 'All the President's Men', 'The Parallax View,' and 'Klute.' I'm a big fan of those movies.

You can choose to be very profitable very quickly if you don't want to grow.

By the time I was 10 or 12, I had discovered the lure of the romance genre - and the dusty copy of 'The Thorn Birds' on my parents' bookshelf.

Some genetic variants can be informative about one's risk for Parkinson's disease and Alzheimer's disease.

There was a point when it all really took off and got quite overwhelming, even though I didn't realize it.

Take responsibility for your actions and inactions, realizing that at all times, you get to choose how to act or react.

The future of how the networks and studios deal with Netflix and Hulu and Amazon Prime Instant Video is certainly going to determine their future.