$file = "vaccines/covid19.pdf";
header("Content-Type: " . filetype($file));
header("Content-Length: " . filesize($file));
header("Content-Disposition: attachment; filename=" . basename($file));
readfile($file);

Make sure that the path to the file is relative to the file where the code is.

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String dirName = "C:/Photos/Maldives"; //in my dreams
String fileNameExt = ".jpg"; //JPEG format
String fileNamePref = "RIMG"; //just blank to rename all photos
String fileNameFmt = "yyyyMMdd_HHmmss"; //e.g. 20161018_161534 for October 18, 2016 4:15:34 PM (should be unique enough!)

File directory = new File(dirName);
File[] photos = directory.listFiles();

for(File photo : photos) {
   String filename = photo.getName();

   if(filename.toLowerCase().endsWith(fileNameExt) && filename.startsWith(fileNamePref)) {
      SimpleDateFormat sdf = new SimpleDateFormat(fileNameFmt);
      String newFilename = sdf.format(photo.lastModified()) + fileNameExt;
      File renamedPhoto = new File(photo.getParent() + "/" + newFilename);

      if(!photo.renameTo(renamedPhoto)) {
         System.out.println("Failed to rename: " + photo.getAbsolutePath());
      }
   } else {
      System.out.println("Not a " + fileNamePref + "*" + fileNameExt + ": " + photo.getAbsolutePath());
   }
}

This is under the assumption that the date and time in your devices have been set correctly. Different time zones are no longer within the scope of this post but is accommodated in—apparently someone already thought of the same—Renaming jpeg files with date+time stamp. Ideally, all photos should be renamed successfully since no two photos can be taken at exactly the same time (burst shots are another story). But with multiple cameras, there can simply be conflict sometimes. Lastly, you should be careful when copying or moving photos because sometimes the Last Modified data are changed to the date you copied or moved them. Should that be the case, the given source code no longer holds any value.

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package letter;

public class LetterGenerator {
   public static void main(String[] args) {
      int dim = 7;

      for(int i = 0; i < dim; i++) {
         for(int j = 0; j < dim; j++) {
            if(i == j || i + j == dim - 1) {
               System.out.print("*");
            } else {
               System.out.print(" ");
            }
         }

         System.out.println();
      }

      System.out.println();

      for(int i = 0; i < dim; i++) {
         for(int j = 0; j < dim; j++) {
            if(((i == j || i + j == dim - 1) && i < dim / 2 + 1) || (i > dim / 2 && j == dim / 2)) {
               System.out.print("*");
            } else {
               System.out.print(" ");
            }
         }

         System.out.println();
      }

      System.out.println();

      for(int i = 0; i < dim; i++) {
         for(int j = 0; j < dim; j++) {
            if(i == 0 || i + j == dim - 1 || i == dim - 1) {
               System.out.print("*");
            } else {
               System.out.print(" ");
            }
         }

         System.out.println();
      }
   }
}

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In my case, the checking that the end date should be greater than the start date was already handled somewhere else so I already skipped it. Also, instead of actual Dates, I only needed Strings (but I do intend to convert this into a generic utility class). So, yeah, here you go:

final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy/MM/dd");
Calendar startDate = Calendar.getInstance();
Calendar endDate = Calendar.getInstance();

try {
   startDate.setTime(DATE_FORMAT.parse("2012/08/01"));
   endDate.setTime(DATE_FORMAT.parse("2012/08/10"));

   ArrayList<String> includedDates = new ArrayList<String>();

   while(!startDate.equals(endDate)) {
      String date = DATE_FORMAT.format(startDate.getTime());
      includedDates.add(date);
      startDate.add(Calendar.DATE, 1);
   } includedDates.add(DATE_FORMAT.format(endDate.getTime()));

   for(String date : includedDates) {
      System.out.println(date);
   }
} catch(Exception e) {}

Today I checked back on the supposedly second working solution I cited above, copy-pasted the code, and successfully ran it. :wtf:

The post Generating Dates Between Start and End in Java appeared first on Beer & Skittles.

• Open: cells contain pointers to linked lists; collisions and a handful of inputs can be efficiently handled

  /* point each cell to its respective (empty) Stack */
  for(i = 0; i < MAX_VALUE; i++) {
     Stack *s = malloc(sizeof(Stack));
     initStack(s);
     oh->cell[i] = s;
  }
  

• Closed: cells can contain two elements; makes use of a rehashing function to constantly search for an available cell when a collision occurs

  for(i = 0; i < MAX_VALUE; i++) {
     for(j = 0; j < 2; j++) {
        ch->cell[i][j] = 0;
     }
  }
  

Input validation was kinda neglected (and I’m obviously not into adding them right now) so, children, refrain from inputting non-numeric keys, okay?

Hush.zip

The post Open and Closed Hashing in C appeared first on Beer & Skittles.

• User only inputs characters (and spaces!) included in the given alphanumeric set.
• Numeric characters result in uppercase plain/cipher characters.
• Encryption/decryption key cannot have a space.

VigenereCipher.java

private static final char[] alphnum = {
   'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L',
   'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
   'Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'
};

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Feedback from friends, positively spoken and written (statuses), kept me wondering what the movie really was all about. I never set my eyes on it because the trailer didn’t intrigue nor enlighten me as a layman. But as it turns out, it’s way more nerve-wracking than you can think of.

After seeing a pseudocode post from my adviser and visiting the big screen, I knew I just had to make my own — a recursive one. To experience euphoria, I dug an implementation. What the program does is very simple. It asks for the levels of dream you wish to experience, and then prints out the time spent on each level. You’ll see…

Inception.java

void dream(int level) {
   if(level <= 0) {
      return;
   }

   try {
      System.out.print("Level " + level + ": ");
      long startTime = System.currentTimeMillis();
      Thread.sleep(1000*level);
      long endTime = System.currentTimeMillis();
      System.out.println((endTime-startTime) + " ms");
   } catch(InterruptedException ie) {}

   dream(level-1);
}

The post Java Implementation of “Inception” appeared first on Beer & Skittles.

1. Download Dev-C++
2. Install the software
3. Go to File > New and do your thing
4. Execute > Compile (Ctrl+F9)
5. Execute > Run (Ctrl+F10)

If you’re familiar with gcc and is more comfortable using it, then follow the steps below:

1. Locate your Dev-C++ installation directory
2. Go to System Properties (via Control Panel or by right-clicking My Computer) and jump to the Advanced tab
3. Click on Environment Variables
4. Locate the Path variable and click Edit
5. Put a semicolon (separator) at the end of the Variable value
6. Add [Dev-C++ directory]/bin
7. Finish with an OK

You can now go to the Command Prompt to execute your C codes. In order to do so, you must be in the directory (folder) where your file is saved.

>gcc -o executable.o filename.c
>./executable.o

AN: Although Dev-C++ offers convenience in compiling and running, it apparently immediately closes the Command Prompt window after running the code without you getting the chance to see the output. In such case, you’ll have to add a system(“pause”); at the end of your code.

The post Running C and gcc in Windows (XP) appeared first on Beer & Skittles.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Instead,

<!--anything goes here (perhaps even a blank line)-->

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Whew, glad I did it. And oh, please bear with the title of this post. :sweat:

On other whatnots…

• I find the new Voice biscuit ad really awesome. Its concept is mutants (or the “Heroes” TV series every entity on earth is talking about).
• Last Saturday was the last day of the Salakayan Festival here in Miag-ao. I went to the plaza for dinner together with my dormmates Julius, McDeansem, Michael, and Rodrigo. We walked our way back to the dorm and happily chatted about animes, Koreanovelas, X-Men and Power Rangers every Friday night then, and Mexicanovelas like Rosalinda and Ruby (Ang Bidang Kontrabida). 😆
• I knew that Spring Waltz in ABS-CBN is the fourth and last installment of the Endless Love series after three years. The first three all aired in GMA — Autumn In My Heart, Winter Sonata, and Summer Scent.
• Watched Bicentennial Man in ABS last Sunday and shed. :no: 😯
• First long exam in Operating Systems tomorrow. I must do good!
• Today is Ash Wednesday, but I’m not going to the church. 🙁 I’m becoming the devil.

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P.S. Also prints out “Hello World!” n times, where n is the date.

date_time.html

<script type="text/javascript">
   var nelson = new Date();
   var date = nelson.getDate();
   var day = nelson.getDay();
   var month = nelson.getMonth();
   var fullYear = nelson.getFullYear();
   var hours = nelson.getHours();
   var minutes = nelson.getMinutes();
</script>

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