java - Beginner Boolean compiling error -


i new java (doing beginners university module) sorry silly question. trying verify whether ragged array 'tridiagonal matrix'.

it valid if of length 3 @ first level , of length n − 1, n, , n − 1 @ second level. intended come code firstly verify length 3, find longest length array within n, verify each length.

for whatever reason code won't compile i'm not seeing error message, red exclamation mark on class. assume means there multiple errors. if point them out massive help.

static boolean isvalidtridiagonal ( double [][] m) {      if (double [][]=new double [3][])     {          int n = 0;         for(int = 0; < m.length; i++)         {             if(m[i].length > n)             {                 n = m[i].length;                  if( (m[0].length = n-1) && (m[1].length = n) &&(m[2].length=n-1))                 {                     return true                  }                 else                 {                     return false                 }             }                 else              {                 return false             }         }

thanks much!

why need loops? if arrays cannot null, than

static boolean isvalidtridiagonal(double[][] m) { return m.length == 3 && m[0].length == m[1].length - 1 && m[2].length == m[0].length; }


Comments

Post a Comment

Popular posts from this blog

php - How to add and update images or image url in Volusion using Volusion API -

actually have store importing products store product data insert , update image or image url not insert , update. this xml code name datapro.txt. <products_joined> <productcode>3710_012t</productcode> <vendor_partno>eah5450silent/di/1gd3(lp)</vendor_partno> <productname>test product ta</productname> <hideproduct>n</hideproduct> <stockstatus>20</stockstatus> <lastmodified>1/5/2016 10:25:00 am</lastmodified> <lastmodby>2</lastmodby> <productweight>0.9</productweight> <productprice>100</productprice> <productmanufacturer>asus tek</productmanufacturer> <vendor_price>32.69</vendor_price> <numproductssharingstock>0</numproductssharingstock> <categoryids>107</categoryids> <producturl>http://tebkq.mvlce.servertrust.com/productdetails.asp?productcode=3710_012t</producturl...
Read more

Laravel mail error `Swift_TransportException in StreamBuffer.php line 269: Connection could not be established with host smtp.gmail.com [ #0]` -

i developing website contact-us page guest users can send me email using gmail . anytime try send mail using contact-us form, error swift_transportexception in streambuffer.php line 269: connection not established host smtp.gmail.com [ #0] this mail.php return [ 'driver' => env('mail_driver', 'smtp'), 'host' => env('mail_host', 'smtp.gmail.com'), 'port' => 587, 'from' => ['address' => '', 'name' => ''], 'encryption' => env('mail_encryption', 'tls'), 'username' => env('mail_username'), 'password' => env(mail_password), 'sendmail' => '/usr/sbin/sendmail -bs', 'pretend' => env('mail_pretend', false), ]; this .env mail_driver=smtp mail_host=smtp.gmail.com mail_port=587 mail_username=afecjaped@gmail.com mail_password=********...
Read more

c# SetCompatibleTextRenderingDefault must be called before the first -

i tried search exception couldn't find solution on case i'am using code below invoke .net application : assembly assem = assembly.load(data); methodinfo method = assem.entrypoint; var o = activator.createinstance(method.declaringtype); method.invoke(o, null); the application invoked has form , in entrypoint of application : [stathread] static void main() { application.enablevisualstyles(); application.setcompatibletextrenderingdefault(false); //exception application.run(new form1()); } setcompatibletextrenderingdefault must called before first iwin32window object created in application. edit : assembly = assembly.load(data); methodinfo method = a.gettype().getmethod("start"); var o = activator.createinstance(method.declaringtype); method.invoke(o, null); you should create new method skips initialization...
Read more