diff bet multi dimension array and jagged array

[Sri82]

Hi,

Can any one tell me what is the difference between Multidimension array and Jagged array?

- Sri Hari

[techvinny]

A multi-dimensional array has fixed columns for each of the rows...

//Creates a 2-dimensional array with 4 rows and every row with 2 columns, 4x2
int[,] array = new int[4, 2];

//Creates a 3-dimensional array of 4x2x3
int[, ,] array1 = new int[4, 2, 3];

//initialzing 2-dimensional array on declaration using new
int[,] array2D = new int[,] { { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 } };

//initializing 3-dimensional array on declaration without using new or specifying rank
int[, ,] array3D = { { { 1, 2, 3 } }, { { 4, 5, 6 } } };

//assigning value to an array element
array1[1, 0, 2] = 27;

A jagged array is an array whose elements are arrays. The elements of a jagged array can be of different dimensions and sizes. A jagged array is sometimes called an "array of arrays. Its elements are reference types and are initialized to null.

//declaration of a single-dimensional array that has three elements, each of which is a single-dimensional array of integers
int[][] jaggedArray = new int[3][];

//initializing the elements of a jagged array. it's a must to initialize each of the elements before using them
jaggedArray[0] = new int[] { 1, 3, 5, 7, 9 };  //array of 5 integers
jaggedArray[1] = new int[] { 0, 2, 4, 6 };     //array of 4 integers
jaggedArray[2] = new int[] { 11, 22 };         //array of 2 integers

//You can also initialize the array elements without using new
int[][] jaggedArray3 = 
{
    new int[] {1,3,5,7,9},
    new int[] {0,2,4,6},
    new int[] {11,22}
};

// Assign value to the second element ([1]) of the first array ([0]
jaggedArray3[0][1] = 34;

HTH!!!