string 2d array in java code example
Example 1: how to fill a 2d array in java
int rows = 5, column = 7;
int[][] arr = new int[rows][column];
//2D arrays are row major, so always row first
for (int row = 0; row < arr.length; row++)
{
for (int col = 0; col < arr[row].length; col++)
{
arr[row][col] = 5; //Whatever value you want to set them to
}
}
Example 2: 2d array java
//Length
int[][]arr= new int [filas][columnas];
arr.length=filas;
int[][] a = {
{1, 2, 3},
{4, 5, 6, 9},
{7},
};
// calculate the length of each row
System.out.println("Length of row 1: " + a[0].length);
System.out.println("Length of row 2: " + a[1].length);
System.out.println("Length of row 3: " + a[2].length);
}
Example 3: declare matrix in java
int[][] multi = new int[5][];
multi[0] = new int[10];
multi[1] = new int[10];
multi[2] = new int[10];
multi[3] = new int[10];
multi[4] = new int[10];