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Grokking the Coding Interview Patterns in C++

Introduction to Matrices

Explore the fundamentals of matrices as used in coding interviews, including matrix representations, common operations like addition and rotation, and traversal techniques such as row-major and spiral orders. Understand how to identify problems suited for matrix patterns and their real-world applications in image processing and machine learning.

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About the pattern

A matrix is a group of numbers arranged in rows and columns in a rectangular pattern. In computer science, matrixes are represented by 2D arrays with dimensions m×nm \times n, where mm is the number of rows, and nn is the number of columns. Each element in the matrix can be accessed using the array indexes. The first index represents the row, and the second index represents the column. For example, matrix[i][j]matrix[i][j] is an element from the ithi^{th} row and the jthj^{th} column of the matrix.

Matrix transformations are operations performed on matrices that result in a new matrix. There are several types of matrix transformations commonly used in mathematics and computer science. Here is a list of some of the most ...