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Flat View: This topic has 57 replies on 4 pages [ « | 1 2 3 4 ]

Lyndon Samson Posts: 2 Nickname: samsonl Registered: Jan, 2012 Re: What is the meaning of life? Posted: Jan 31, 2012 6:54 PM Reply Advertisement Fixed :-) With the added avantage that it now runs much much more slowly... Out of curiousity, has anyone run it on a non intel x86 fpu? import java.math.BigDecimal;   public class MeaningOfLife { public static String findOutWhatLifeIsAllAbout() { int meaning = 0; for (int i = 0; i < 10; i++) { System.out.println("Running"+i); for (int j = 0; j < 20; j++) { System.out.println(" Running : "+j); for (int k = 0; k < 300; k++) { for (int m = 0; m < 7000; m++) { meaning = (new BigDecimal(meaning).add(new BigDecimal(Math.random())).add(BigDecimal.ONE)).intValue(); } } } } return String.valueOf(meaning).replaceAll("0*$", ""); }   public static void main(String[] args) { System.out.println(findOutWhatLifeIsAllAbout()); } }

Lyndon Samson Posts: 2 Nickname: samsonl Registered: Jan, 2012 Re: What is the meaning of life? Posted: Jan 31, 2012 6:58 PM Reply Old but interesting article, wonder if the issues are still extant? http://www.cs.berkeley.edu/~wkahan/JAVAhurt.pdf

Keith Brings Posts: 3 Nickname: keithnoizu Registered: Mar, 2012 Re: What is the meaning of life? Posted: Mar 27, 2012 3:14 PM Reply With out running the code or reading the comments i'll take a guess that its 42. 1. The Douglas Adams Reference. 2. I havent done java in a long time but I believe Math.Random() returns an objects. The next part baffles me but im assuming either because of the static address space or because the object is never references that Math.Random() + 1 always equals 1. So this has us adding up a large power of 10 of 42 and then stripping out the trailing zeros. If I am write its entirely due to the title of the article.

Keith Brings Posts: 3 Nickname: keithnoizu Registered: Mar, 2012 Re: What is the meaning of life? Posted: Mar 27, 2012 3:15 PM Reply Oh man, the typos and word choice mistakes start pouring in after pulling an all nighter >_<

Keith Brings Posts: 3 Nickname: keithnoizu Registered: Mar, 2012 Re: What is the meaning of life? Posted: Mar 27, 2012 3:16 PM Reply Ahh not even close. ^_^.

Heinz Kabutz Posts: 46 Nickname: drbean Registered: May, 2003 Re: What is the meaning of life? Posted: Mar 28, 2012 12:58 AM Reply Nope :-)

philippos papadatos Posts: 6 Nickname: firesoft Registered: Mar, 2012 Re: What is the meaning of life? Posted: Mar 28, 2012 11:25 PM Reply package meaningOfLife; public class MeaningOfLife { public static String findOutWhatLifeIsAllAbout() { double meaning = 0; int temp = 0; for (int i = 0; i < 10; i++) { for (int j = 0; j < 20; j++) { for (int k = 0; k < 300; k++) { for (int m = 0; m < 7000; m++) { temp = (int)Math.random(); meaning += temp + 1; } } } } return String.valueOf(meaning).replaceAll("0*$", ""); } public static void main(String[] args) { System.out.println(findOutWhatLifeIsAllAbout()); } } the temp value is usefull for debuging purposes, if you change both variables temp,meaning to type double the results are correct and as expected. the value of temp is always zero because the decimal places are thrown away when it is declared as int.

Luke DeStevens Posts: 1 Nickname: jtempest Registered: Apr, 2012 Re: What is the meaning of life? Posted: Apr 9, 2012 9:49 AM Reply "No one managed to figure out what the code does without running it." Challenge accepted (though I'm sure everyone has already done so by now, since it was December). Nice puzzle! Took me about a minute. I believe it prints out 42. Here is my analysis: Each of the four nested loops results in "meaning += Math.random() +1" being run 20*30*700*2000 times, or 420000000 times. So, "meaning" gets Math.random() + 1 added to it 420000000 times. Since Math.random() returns a double (or maybe it was a float) greater than or equal to 0, but less than 1, and since "meaning" is an integer, the Math.random() value gets dropped every time. As such, "meaning" has a final value of 420000000. The String.replaceAll() call reduces the string to 42. This is a reference to Hitchhiker's Guide to the Galaxy; 42 is the answer to the ultimate question of life, the universe, and everything. The real question, though, is "what is the question?" I almost missed realizing that the result of Math.random() gets dropped, and I must admit that I don't get why "*$" is in the replaceAll method replace string. I assume it to be a regular expression, which I am not familiar enough with. I haven't run it yet, so if I'm wrong or have missed something, that'd explain why. This reminds me of another problem I saw posted somewhere a long time ago, which was basically "Given the lowest common multiple of all integers between 1 and 10 (inclusive), write a piece of code that finds the lowest common multiple of all integers between 1 and 20 (inclusive)". Fun times.

Heinz Kabutz Posts: 46 Nickname: drbean Registered: May, 2003 Re: What is the meaning of life? Posted: Apr 9, 2012 10:14 AM Reply Thanks for trying, Luke. Unfortunately it is still true that "No one managed to figure out what the code does without running it." But don't worry, I include myself in that. My intention was to get "42", but the result differed, which made me rather curious. Heinz

philippos papadatos Posts: 6 Nickname: firesoft Registered: Mar, 2012 Re: What is the meaning of life? Posted: May 5, 2012 11:16 PM Reply anyway there is no point, you always must run and test your programming concepts its like singing but only in you head,trying to solve a programming puzzle without a computer,you have to make sound in order to sing...

Girish Kolanthra Posts: 1 Nickname: girishkola Registered: Sep, 2012 Re: What is the meaning of life? Posted: Sep 27, 2012 3:27 PM Reply public class MeaningOfLife { public static String findOutWhatLifeIsAllAbout() { int meaning = 0; int oldMeaning = 0; int deviation = 0; for (int i = 0; i < 10; i++) { for (int j = 0; j < 20; j++) { for (int k = 0; k < 300; k++) { for (int m = 0; m < 7000; m++) { oldMeaning = meaning; meaning += Math.random() + 1; if((meaning - oldMeaning) > 1) { deviation++; } } } } } System.out.println(deviation); return String.valueOf(meaning).replaceAll("0*$", ""); } public static void main(String[] args) { System.out.println(findOutWhatLifeIsAllAbout()); } }

wang Anna Posts: 1 Nickname: annawang Registered: Nov, 2012 Re: What is the meaning of life? Posted: Nov 14, 2012 3:42 AM Reply I am really confused about this article.

Heinz Kabutz Posts: 46 Nickname: drbean Registered: May, 2003 Re: What is the meaning of life? Posted: Nov 14, 2012 10:21 AM Reply I think most people are confused by what life is all about ;-)

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