What is the difference between Array and ArrayList?

Question

What is the difference between array,arraylist and list, also give an example?

Satyapriya Nayak · Answer

Hi Richa, Array is the collection of values of the same data type the variables in an array is called array elements Array is a reference type data type The array structure in System's Memory Array list is a class . when you want to access the elements of an array through its index value location in an array,use an ArrayList. The use of the arraylist is an alternative to the use of the array. The Methods Of ArrayList class are 1)Add 2)Remove 3)Clear 4)Insert 5)TrimToSize 6)Sort 7)Reverse Please refer the below links http://www.c-sharpcorner.com/uploadfile/puranindia/arrays-in-C-Sharp-language/default.aspx http://www.c-sharpcorner.com/UploadFile/puranindia/C-Sharp-arraylist/ Thanks

Senthilkumar · Answer

Hi, Simply you can say, Array is data type oriented. It should be int or float or string or object, etc., but the arraylist is stores everything is type oriented. The array size has to be defined and arraylist can grow dynamically. But it will take atleast 32 initially. The Array is type safe and arraylist needs type conversion and leads runtime error. The Arraylist belongs to system.collection and array belongs to system.Array namespace.

Ehtesham · Answer

another difference between array list and array is arraylist can dynamically increase or decrease its size were as array size is constant

What is the difference between Array and ArrayList?

Answers (3)