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Java Array Homework Help

Java Array:

Array is collection same data type with sequential order. It is used to declare and access collection of variables.

Declare arrays:

First we have to specify the data type and follow by the variable name.


Datatype [] variablename;


Int [] numers;

Creating array:

Using new keyword we can create an array.


Datatype [] variablename= new datatype [ array size];


Int [] numbers= new int[10];

Example program:

{`public class sampleArray
 public static void main(String[] args)
 int[] numbers =  {  1, 2, 3, 4 }  ;;
 // Print all the array elements
 for (int i = 0; i < numbers.length; i++)
 System.out.println(numbers[i] + " ");
 }  ;
 // Summing all elements
 int total = 0;
 for (int i = 0; i < numbers.length; i++)
 total += numbers[i];
 }  ;
 System.out.println("Total is " + total);
 // Finding the largest element
 int max = numbers[0];
 for (int i = 1; i < numbers.length; i++) {  
 if (numbers[i] > max) max = numbers[i];
 }  ;
 System.out.println("Max is " + max);
 }  ;
 }  ;






Total is 10

Max is 4

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