2d matrices

Arrays : 2D Matrices¶

Matrices are series of series of scalars, or series of vectors. In code, they are typically stored as an array of arrays.

int matrix[]= new int[3,3]

[
    [1,2,3],
    [4,5,6],
    [7,8,9]
]

Scalars¶

Scalars are simply numbers. For example, 2 is a scalar. So is 3.14159 and 1.618. And so is -273.15. Bonus points if you can figure out what those numbers are special for.

Vectors¶

Vectors are series of scalars. For example, [1, 3, 5, 7, 9] is a vector. You typically store vectors as an array.

2D Matrix¶

Problem 1 - Print Row Wise Sum¶

Problem 2 - Max Column Sum¶

Problem 3 - Print Square Matrix Diagonals¶

Problem 4 - Print all Diagonals from Right -> Left¶

Problem Understanding Observation Solution

Transpose Matrix¶

Rotate Matrix¶

Refer:

2D Matrix

Rotate Matrix

Spiral Array