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Problem 1842. rot45 : a different aproach

Created by Paul Berglund

Inspired by problem 1840.

http://www.mathworks.com/matlabcentral/cody/problems/1840-rotate-matrix-clockwise-45-degree

Given an arbitrary n by n matrix, rotate it 45 degrees counterclockwise as in the following example:

if x is

1 3 
2 4

rot45(x) would then be

0 3 0

1 0 4

0 2 0

So the matrix gets larger each time it is rotated.

Problem Group

Solution Statistics

11 correct solutions 7 incorrect solutions
Last solution submitted on Sep 16, 2013

Problem Comments