Introduction to 2D Array

Like in One Dimensional Array . Two Dimensional array also consists of sequence of elements.

But the elements can be laid in rectangular grid rather than a line.

We also have 2D Dynamic array Just as 1D Dynamic array https://techyield.blogspot.com/2019/06/introduction-to-dynamic-array.html

Let's take a look at an example of using a two-dimensional array:

package com.techyield.operationsinarray;

public class OperationsIn2Darray {

private static void printArray(int[][] a) {

for(int i =0; i < a.length; i++) {

         System.out.println(a[i]);

}

for(int i = 0 ; i< a.length; i++) {

for(int k=0; a[i]!= null && k < a[i].length; k++) {

System.out.println(a[i][k]+" ");

}

System.out.println();

}

}

public static void main(String[] args) {

System.out.println("Example I:");

int [][] a = new int[2][];

printArray(a);

System.out.println(" Example 2:");

int [][] b = new int[3][5];

printArray(b);

System.out.println("Example 3:");

b[0] = new int[3];

b[1] = new int[5];

printArray(b);

}

}