Luca Zanini
  • Home
    • Astronomy
    • Android
    • Java
    • Lotus
  • About me
  • Large sum

    Mar 6, 2013

    —

    by

    Luca Zanini
    in Uncategorized

    From the Project Euler Problem 13: Work out the first ten digits of the sum of the following one-hundred 50-digit numbers.

    Read more: Large sum

  • Validation of an Edit Box control in the XPages

    Mar 3, 2013

    —

    by

    Luca Zanini
    in Lotus

    In the XPages the “Edit Box” controls have some settings that allow you to perform simple validations. These settings are under the label “Validation” of the control and depend on the value of “Display Type” under the label “Data”; in the figure you can see a screenshot of the validation of an Edit Box control…

    Read more: Validation of an Edit Box control in the XPages

  • Highly divisible triangular number

    Feb 24, 2013

    —

    by

    Luca Zanini
    in Uncategorized

    From the Project Euler Problem 12: The sequence of triangle numbers is generated by adding the natural numbers. So the 7th triangle number would be 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28. The first ten terms would be: 1, 3, 6, 10, 15, 21, 28, 36, 45,…

    Read more: Highly divisible triangular number

  • How to save the state of a WebView inside a Fragment of an Action Bar

    Feb 22, 2013

    —

    by

    Luca Zanini
    in Android

    The idea for this post came to me after reading the comment of Esthon Wood: “do you have any idea on how to save the state of the WebView? I mean, the webview refreshes everytime I tap on the tab.” in the post Tab Layout in Android with ActionBar and Fragment.

    Read more: How to save the state of a WebView inside a Fragment of an Action Bar

  • How to replace a Fragment in an ActionBar in mode NAVIGATION_MODE_TABS

    Feb 14, 2013

    —

    by

    Luca Zanini
    in Android

    In the post Tab Layout in Android with ActionBar and Fragment I wrote an example about tabs in an action bar where each label open a fragment that you can not change at runtime. In this post I explain how to replace a fragment with an other using a button.

    Read more: How to replace a Fragment in an ActionBar in mode NAVIGATION_MODE_TABS

  • Largest product in a grid

    Feb 4, 2013

    —

    by

    Luca Zanini
    in Uncategorized

    From the Project Euler Problem 11: In the 20×20 grid below, four numbers along a diagonal line have been marked in red. 08 02 22 97 38 15 00 40 00 75 04 05 07 78 52 12 50 77 91 08 49 49 99 40 17 81 18 57 60 87 17 40 98…

    Read more: Largest product in a grid

  • Summation of primes

    Dec 31, 2012

    —

    by

    Luca Zanini
    in Uncategorized

    From the Project Euler Problem 10: The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below two million. checked A processor Intel® Core™ i7-2720QM CPU @ 2.20GHz × 8 takes about 6 minutes to complete this calculation.

    Read more: Summation of primes

  • Project Euler – Problem 9

    Dec 27, 2012

    —

    by

    Luca Zanini
    in Uncategorized

    From the Project Euler Problem 9: A Pythagorean triplet is a set of three natural numbers, a b c, for which, a2 + b2 = c2 For example, 32 + 42 = 9 + 16 = 25 = 52. There exists exactly one Pythagorean triplet for which a + b + c = 1000. Find…

    Read more: Project Euler – Problem 9

  • Project Euler – Problem 8

    Dec 12, 2012

    —

    by

    Luca Zanini
    in Uncategorized

    From the Project Euler Problem 8:Find the greatest product of five consecutive digits in the 1000-digit number. 7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450 checked I wrote the digits in a file, I read the file and I set an ArrayList<Character>…

    Read more: Project Euler – Problem 8

  • Unexpected value from nativeGetEnabledTags: 0

    Dec 2, 2012

    —

    by

    Luca Zanini
    in Android

    From the release Android SDK Tools 21 a warning fills the logcat: Unexpected value from nativeGetEnabledTags: 0 I hope it will be fixed in the next release, waiting a solution I found this workaround.

    Read more: Unexpected value from nativeGetEnabledTags: 0

←Previous Page Next Page→
We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.