I am trying to remove duplicates in my string array though it's not working, I uses Split String to get my string in an array and then used a counter method to count the duplicates. I don't understand what I did wrong  public class Program {  public static void uniqWords(String s){     String[] sentence = s.split(" ");     int[] counter = new int[sentence.length];     for(int i=0; i&lt; sentence.length; i++){     for(int j=i+1; j&lt;sentence.length; j++){         if(sentence[i] == sentence[j] ){             counter[i] =1;         }      }     }//     for(int i=0; i&lt;counter.length; i++){        System.out.print(counter[i] + ",");     }    for(int i =0; i&lt;sentence.length; i++){      if(counter[i] == 1){         sentence[i] = "";       }     } //print     for(int i=0; i&lt;sentence.length; i++){       System.out.print(sentence[i]);       System.out.print(" ");      }   //    }     public static void main(String[] args) {       // TODO Auto-generated method stub        uniqWords("Spring in in Paris");      } }
I've been using the == operator in my program to compare all my strings so far. However, I ran into a bug, changed one of them into .equals() instead, and it fixed the bug.  Is == bad? When should it and should it not be used? What's the difference?
Was Louis stalked days in advance too? Let $\Gamma$ be a set of formulas and $\phi$ be a formula. Show that $\Gamma \cup \{\neg \phi\}$ is satisfiable if and only if $\Gamma\not \models \phi$.   This seemed pretty obvious but I wanted to see if my proof made sense:  Proof: $(\Rightarrow)$  To derive for a contradiction, suppose that: $\Gamma \models \phi$. That means for all truth assignments $v$, for $\gamma \in \Gamma$, if $v(\gamma) = T$, then $v(\phi) = T$.  But this contradicts our assumption that $\Gamma \cup \{\neg \phi \}$ is satisfiable by the fact that $v(\phi) = T$ cannot happen so: $\Gamma \not \models \phi$ .  $(\Leftarrow)$   So by the definition of $\Gamma \not \models \phi$, we have that there is some truth assignment $v$ which satisfies $\Gamma$ but does not satisfy $\phi$. So  that means $v(\phi) = F$ since $v(\phi) \not = T$ which implies that $v(\neg \phi) = T$ which means $v$ satisfies $\Gamma \cup \{\neg \phi\}$.    I feel like I'm missing something in the forward direction, but at the same time... It looks pretty trivial as well. Am I missing anything crucial?  Thank you! Workaround for Android 4.4 not being able to write to SD cards? Yesterday I upgraded my Samsung Galaxy S4 to Android 4.4 KitKat and had the bad surprise that it cannot write to my SD card anymore... I know this problem is widely documented everywhere, but has any workaround been found for it yet? (Other than removing the card physically from the phone and opening it on my PC) Also, because of the KNOX flag I can't downgrade to 4.3...  (PS: Rooted or not, it makes no difference) I'm a new blender user, but have used other modelling programs before.   I've downloaded a  and unzipped it.   When I import the obj into blender, it is my understanding (from here: ) that the mtl should just import itself with it. However, when I import the obj, I just get a grey model with no texture. Is it actually importing the mtl but I'm not seeing it? Also for the record, I have changed no settings in blender.  Picture for reference: Heat production of magnifying glass Why Magnifying glass(convex lens) produces heat when placed in front of sun? This is a weird phenomenon.  Consider the following code:  \documentclass{article} \begin{document}   $$Z^* \frac{Z^*}{Z^*}$$ \end{document}   It produces the following picture:    The asterisks appear in various places in comparison to the Z. This looks particularly bad in the denominator. Any idea what's behind this? @online bibliography biblatex I have a Dell Studio 17. It's a few years old, and I wanted to upgrade the processor. It currently has an Intel Core 2 Duo T5750 @ 2.00GHz  My question is how can I find out which processors are compatible? Reading shapefile using C#? I am new to ArcGIS and trying a few things..   I'm trying to read shapefile (which is supplied as an input) using C# and I want to generate a PDF file which contains underlying metadata information (similar to the Identify tool) ? Why is "our today's meeting" wrong? One of the answers to  question states that &quot;We shall discuss it in our today's meeting&quot;  is grammatically correct. To me, that sentence is clearly wrong. While in today's meeting is fine and in our today meeting is OKish (though at the very least clumsy), there's something about the possessive there (our today's) that makes it wrong for me. I would read that sentence as in our today's (as opposed to your today's) meeting. Similar to in our car's trunk where the our clearly modifies car and not trunk or car trunk, the our in our today's seems to be modifying today's and not meeting. So, my questions are i) is it actually grammatically wrong to say in our today's or is it just a question of usage? and ii) if it is indeed wrong, how can we explain its wrongness? Find the set of $x>0$ such that the series $\sum\limits_n x^{\ln{n}}$ converges If $x&gt;0$, find the set of all values of $x$ such that series is convergent$$\sum_{n=1}^{\infty} x^{\ln{n}}$$   My attempt:- I used Ratio test for finding the set of all values of $x$ such that series is convergent.   $$\lim_{x\to\infty}\frac{x^{\ln{n+1}}}{x^{\ln{n}}}$$  $$=\lim_{x\to\infty}x^{\ln\frac{n+1}{n}}$$ This quantity must be less than one for getting a convergent series, I am not able to judge. Can you please help me to find the interval of convergence? Lost passport with Schengen visa Windows does not mount USB NTFS superfloppy I have a Transcend Storejet external USB hard disk. This is not an SSD, but a mechanical disk with rotating plates. I have formatted the whole disk, without partitioning, as NTFS. I have used mkntfs tool under Linux.  When plugged into a Linux machine, the system sees a drive with two partitions (/dev/sdc /dev/sdc1 /dev/sdc2). However, as I know it is a partitionless disk, I can mount the whole device (mount -t ntfs /dev/sdc /mnt) and it works without any problems.  When plugged into a MS Windows XP machine, the systems sees a disk with two unformatted partitions, and it does not assign a drive letter to either the whole disk, nor to any of the partitions.  Would anyone know how to get MS Windows to mount my disk as a NTFS superfloppy?  I have already tried removing old USB mounting points and residual devices using 'DriveCleanup'. It did not help.  By the way, I also have an external Kingston USB SSD, also formatted as NTFS superfloppy, without partitioning. However, this one is recognized and mounted normally by MS Windows. Assume two black holes in the most common size range, spiraling into each other until they merge. The event releases significant amounts of energy via gravitational waves, which warp the space-time.  If the distortion is powerful enough, it would get noticed in daily life, or perhaps even detected by the proprioceptors in the human body.  How close, as an order of magnitude estimate, would you have to be to the merger to perceive it like that, without any instrument? How do I backup all files? (.dbus and dconf backup problems) What are /home/user/.cache/dconf and /home/user/.dbus? Why does their backup fail?  I tried following  (see code below) but while it allowed me to backup the above files, now I am told it couldn't backup /home/[user]/.dbus/session-bus.    $ man chown $ sudo chown user .cache/dconf   [sudo] password for user:  $ sudo chown user .dbus $ man chgrp $ sudo chgrp user .cache/dconf $ sudo chgrp user .dbus   How do I fix it so it will not take my time closing an error message after each backup? Should I exclude these folders ? Why are they not needed? Why would someone want to back them up? Preview on mobile page I suggest a preview on the mobile page. For questions, answers and edits to both, like on the desktop page.  I messed up formatting often enough to be annoyed that there is no preview on the mobile page and I'm surprised that noone suggested it before (at least I didn't find anything).  If it's too performance heavy to have a live preview update after every change in the text box, there could be a preview button next to the save button which leads to a page with only the preview, a back button and a save button (and the title bar and so on). “While” loop without “do”; “if” statement without “then” I have a similar question as this :     How can I get rid of the do in a for loop and the then in an if   statement when typesetting algorithms using the algorithm and   algorithmicx packages?   but I want the same thing for algorithm2e package.  A minimal compilable example:  \documentclass[10pt]{article} \usepackage[linesnumbered,ruled]{algorithm2e} \SetKwRepeat{Do}{do}{while} \SetKw{KwGoTo}{go to}  \begin{document}  \begin{algorithm} \DontPrintSemicolon \KwIn{$A,B$} \KwOut{$C$} \While{$B &gt; 0$} {      $C = C+1$;      $B = B-1$;     \uIf{$C &gt; A$}        {            \textbf{break}\;        } } \caption{ABC} \end{algorithm}  \end{document} Show that Statistic is complete Is 'that is' optional? When I write something like this:     I am a man that is doing these things.   Is it correct to shorten it like this?     I am a man doing these things.   And does it require commas? Parse HTML in Android