Arrays in Salesforce Apex

Arrays in Salesforce Apex 

Array: 

Array is a collection of similar elements, where the memory allocated sequently. 

Data type [] array name = New data type (size); 

// this is called dynamic declaration   

Data type [] array name = New data type [] {value; value 2};

// static declaration 

         Integer [] marks = new integer [] {10,20,30}; 

         Account a1 = new account (name=’same’);

         Account a2 = new account (name=’ram’); 

         Account [] acc = new account [] {a1, a2}; 

         String [] s1 = new string [] {‘ram’, ‘Sam’, ‘ram’};

        String [] s1 new string [4]; 

            S1[0] = ‘Kumar’; 

            S1 [1] = ‘Ravi’;