The problem is given the set of marbles to determine which one marble among them is heavier or lighter than the rest using a balance scale. You also must determine whether the bad marble is heavier or lighter.
I had this question as a homework problem for a discrete mathematics class a while back. The general case is more interesting: Prove that you can find the bad marble among (3^n - 1)/2 - 1 marbles using n weighings. Note that the "interview case" is when n = 3.
strtok is not very useful since it insists on modifying the string you are working with, which, at least in my experience, is just about never the behavior one would like. That said, it is certainly straight forward to tokenize a string in C using the other functions.
Because if you are standing on a "good-old friendly" sphere then it looks 2-dimensional. This is describing a local property of the object, in other words, if you stand at any point on the sphere what is in your immediate viscinioty looks like a 2-dimentional disc. Simmilarly a circle is called a 1-sphere, because if you pick any point on it it what is around you looks like a 1-dimensional line segment(you could also call it a 1-dimensional disc). You can then carry this up to higher dimentions, so that a 27-dimentional sphere is a sphere that looks like a 26-dimentional disc locally. This way of thinking doesn't really break down until you get to an infinite dimentional sphere.
A Markov chain can be defined as a finite state machine with a probability assigned to each transition. The history of if the theory is firmly rooted in probability theory. Key figures include Markov, Wiener, and Kolmogorov, all of whom were definitely mathematicians.
His reasoning ran something like: it's a complex issue and the public really isn't going to contribute anything intelligent to the discussion, so listening to them would just be a waste of time. Better to just ignore them outright. Note that this is not word for word what he said, but the tone and attitude are pretty close by my recolection.
So because somebody didn't lock their door, its okay to steal the things in their house?
No it is not. And if people were breaking into RIAA's computers and copying music directly from them, then your analogy would come close to being reasonable... but not that close. I sure hope a judge isn't thinking like this. Laws which deal with personal property, and its theft, are much different than those which deal with intellectual property and copyrighted works. Read all about it here.
Do you have data/analysis to back up these claims? Also, you refer pretty vaguely to "people", "skills", and "we"; who/what are these words refering to? If you want something truely sobering, look at the past twenty years. Now, look at the rate of inflation, the rate of increase of the average American non-manager's salary, and the rate of increase of the average American manager's salary. It's also interesting to look at these numbers for other countries like Japan/UK/Germany/etc., and see how they compare.
This isn't exactly correct... hence, the replies. Definition: Let R be a ring. Let p be a nonzero, nonunit element of R. Then p is said to be prime if whenever p divides a product of elements of R, p divides one of the factors. Notes: The definition is specialized to that of "prime number" which is considered to be a prime >1 in the integers. Q: Is -3 a prime number? A: no. It is however a prime element of the integers. Q: Is 0 a prime? A: No 0 is not non-zero. Q: Is 1 or -1 a prime integer? A No, 1 and -1 are both units in the integers. Q: Eric Weisstein says that a prime has to be an integer > 1. A: EWW gives this as a definition of a "prime number". There is another entry for "prime element" which coincides with the definition given above. The astute reader will notice that these entries contradict one another. The lesson is of course that mathworld contains errors, and probably should not be relied upon for accurate mathematical information. Q: Are there other ways to define a prime element? A: yes. Look in Lang or Hungerford.
I don't think that's the article's point. The author argues that programming in low level languages reveals bugs inherently.
To be quite honest I think the author's point was to tell us all about his neat debunking of the programmer/figher pilot analogy. Read the article again. There is absolutely nothing else of substance there besides his quick little summary of recent security holes at the beginning. The rest of the article is tenuous at best, and self-contradictory at worst. Worse yet, these are the same arguments that we have been reading in various sources for several years now. The only things which are new here are the items I already mentioned.
They are not identical, and thinking that they are will get you into trouble sooner or later. They are homeomorphic, but this does not mean identical. Think about the expressions 2+2 and 4. They are equal, but are not identical. In topology you have the notions of homeomorphism, homotopy, diffeomorphism, etc. These are all ways of classifying topological spaces into equivalence classes. So saying two spaces are equivalent, or homeomorphic, or "equivalent up to homeomorphism", are all ok, saying two spaces are identical, the same, etc. is much stronger.
I worked at 3 seperate UPS hubs, and I've witnessed all of the actions described and more. I've also talked to people who worked at other hubs that decribed situations like yours. The difference is that the hubs I was working in were processing over ten times as much volume in the same amount of time. Workers were expected to handle packaged at a minimum of 1000 packages an hour, and sometimes the actual rates would go up over 1800 packages an hour. If stuff got backed up it would start to fall on the floor, and then get kicked out of the way. If there was a jam on one of the belts people would typically kick the hell out of it until it came loose rather than having to shut the belt off for a few minutes.
As far as the cameras go, yes they were there, but the only times the footage was used was to verify cases of theft. I suspect that if footage from the cameras started be used on a regular bases to repremand employess, it would also start to be used by the union to back up OSHA violations and unsafe work conditions.
Now, management never really did much about all of this because in order to process the large volumes that we did it was pretty much neccesary to violate OSHA regulations, and the terms of the union contract. If they ever had any discussion with a union employee that could possibly result in disciplinary action, then the employee had the right to have a union representative present. So, management looked away a lot of the time because we were processing all of the volume and they didn't want to piss of the union.
That said, looking at the pictures, I would conjecture that his box was loaded on the floor of a trailer and lots of other heavy boxes were loaded on top of it, crushing the box. Futher damage could have resulted from the box being involved in a jam.
I've actually worked inside 3 seperate UPS hubs as
well as doing deliveries and pickups. So, I've seen what happens to a package from the time it gets picked up to the time it's delivered.
1. All packages should be double boxed with packing material in between the boxes. This is probably the best best single piece of advice I can give. You should also include shipping data inside both of the boxes, as well as heavy duty tape to secure the boxes.
2) Don't write "fragile" "sensitive" etc. on the box. This will only serve as a beacon for some disgruntled employee to take out his frustrations on.
3) Get a large typed shipping label made for the package(black type on a white label) that clearly indicates the shipping address. If someone misreads your label, then that means that the package is going to have to go through more handling, increasing the chances of damage. You should also place the label on the side of the box that has the largest surface area.
Slashdot Mirror
The problem is given the set of marbles to determine which one marble among them is heavier or lighter than the rest using a balance scale. You also must determine whether the bad marble is heavier or lighter. I had this question as a homework problem for a discrete mathematics class a while back. The general case is more interesting: Prove that you can find the bad marble among (3^n - 1)/2 - 1 marbles using n weighings. Note that the "interview case" is when n = 3.
strtok is not very useful since it insists on modifying the string you are working with, which, at least in my experience, is just about never the behavior one would like. That said, it is certainly straight forward to tokenize a string in C using the other functions.
Because if you are standing on a "good-old friendly" sphere then it looks 2-dimensional. This is describing a local property of the object, in other words, if you stand at any point on the sphere what is in your immediate viscinioty looks like a 2-dimentional disc. Simmilarly a circle is called a 1-sphere, because if you pick any point on it it what is around you looks like a 1-dimensional line segment(you could also call it a 1-dimensional disc). You can then carry this up to higher dimentions, so that a 27-dimentional sphere is a sphere that looks like a 26-dimentional disc locally. This way of thinking doesn't really break down until you get to an infinite dimentional sphere.
A Markov chain can be defined as a finite state machine with a probability assigned to each transition. The history of if the theory is firmly rooted in probability theory. Key figures include Markov, Wiener, and Kolmogorov, all of whom were definitely mathematicians.
His reasoning ran something like: it's a complex issue and the public really isn't going to contribute anything intelligent to the discussion, so listening to them would just be a waste of time. Better to just ignore them outright. Note that this is not word for word what he said, but the tone and attitude are pretty close by my recolection.
Do you have data/analysis to back up these claims? Also, you refer pretty vaguely to "people", "skills", and "we"; who/what are these words refering to? If you want something truely sobering, look at the past twenty years. Now, look at the rate of inflation, the rate of increase of the average American non-manager's salary, and the rate of increase of the average American manager's salary. It's also interesting to look at these numbers for other countries like Japan/UK/Germany/etc., and see how they compare.
This isn't exactly correct... hence, the replies.
Definition: Let R be a ring. Let p be a nonzero, nonunit element of R. Then p is said to be prime if whenever p divides a product of elements of R, p divides one of the factors.
Notes: The definition is specialized to that of "prime number" which is considered to be a prime >1 in the integers.
Q: Is -3 a prime number?
A: no. It is however a prime element of the integers.
Q: Is 0 a prime?
A: No 0 is not non-zero.
Q: Is 1 or -1 a prime integer?
A No, 1 and -1 are both units in the integers.
Q: Eric Weisstein says that a prime has to be an integer > 1.
A: EWW gives this as a definition of a "prime number". There is another entry for "prime element" which coincides with the definition given above. The astute reader will notice that these entries contradict one another. The lesson is of course that mathworld contains errors, and probably should not be relied upon for accurate mathematical information.
Q: Are there other ways to define a prime element?
A: yes. Look in Lang or Hungerford.
The Chicago undergraduate mathematics bibliography is a pretty good collection of mathematics texts on moderately advanced topics with some commentary.
They are not identical, and thinking that they are will get you into trouble sooner or later. They are homeomorphic, but this does not mean identical. Think about the expressions 2+2 and 4. They are equal, but are not identical. In topology you have the notions of homeomorphism, homotopy, diffeomorphism, etc. These are all ways of classifying topological spaces into equivalence classes. So saying two spaces are equivalent, or homeomorphic, or "equivalent up to homeomorphism", are all ok, saying two spaces are identical, the same, etc. is much stronger.
No. Quadratic is having to do with a square. The word you are looking for is quaternary which means consisting of four.
Not it isn't. It is just the large prime, one is not a factor.
I worked at 3 seperate UPS hubs, and I've witnessed all of the actions described and more. I've also talked to people who worked at other hubs that decribed situations like yours. The difference is that the hubs I was working in were processing over ten times as much volume in the same amount of time. Workers were expected to handle packaged at a minimum of 1000 packages an hour, and sometimes the actual rates would go up over 1800 packages an hour. If stuff got backed up it would start to fall on the floor, and then get kicked out of the way. If there was a jam on one of the belts people would typically kick the hell out of it until it came loose rather than having to shut the belt off for a few minutes. As far as the cameras go, yes they were there, but the only times the footage was used was to verify cases of theft. I suspect that if footage from the cameras started be used on a regular bases to repremand employess, it would also start to be used by the union to back up OSHA violations and unsafe work conditions. Now, management never really did much about all of this because in order to process the large volumes that we did it was pretty much neccesary to violate OSHA regulations, and the terms of the union contract. If they ever had any discussion with a union employee that could possibly result in disciplinary action, then the employee had the right to have a union representative present. So, management looked away a lot of the time because we were processing all of the volume and they didn't want to piss of the union. That said, looking at the pictures, I would conjecture that his box was loaded on the floor of a trailer and lots of other heavy boxes were loaded on top of it, crushing the box. Futher damage could have resulted from the box being involved in a jam.
I've actually worked inside 3 seperate UPS hubs as well as doing deliveries and pickups. So, I've seen what happens to a package from the time it gets picked up to the time it's delivered. 1. All packages should be double boxed with packing material in between the boxes. This is probably the best best single piece of advice I can give. You should also include shipping data inside both of the boxes, as well as heavy duty tape to secure the boxes. 2) Don't write "fragile" "sensitive" etc. on the box. This will only serve as a beacon for some disgruntled employee to take out his frustrations on. 3) Get a large typed shipping label made for the package(black type on a white label) that clearly indicates the shipping address. If someone misreads your label, then that means that the package is going to have to go through more handling, increasing the chances of damage. You should also place the label on the side of the box that has the largest surface area.