Matrix Transpose
March 20, 2015
Transposing a matrix turns rows into columns and columns into rows; for instance the transpose of the matrix below left is the matrix below right:
11 12 13 14 11 21 31
21 22 23 24 12 22 32
31 32 33 34 13 23 33
14 24 34
That’s easy enough to do when everything fits in memory, but when the matrix is stored in a file and is too big to fit in memory, things get rather harder.
Your task is to write a program that transposes a matrix to large to fit in memory. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.
Programming Praxis 