Cody

Problem 1850. Create a matrix with difference of each row of input matrix

Solution 312068

Submitted on 29 Aug 2013 by Selvaraaju Murugesan
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test Status Code Input and Output
1   Pass
%% x = [1 2 3; 7 8 9; 10 40 60;] y_correct = [6 6 6;3 32 51; -9 -38 -57;] assert(isequal(MatDiff(x),y_correct));

x = 1 2 3 7 8 9 10 40 60 y_correct = 6 6 6 3 32 51 -9 -38 -57 ans = 6 6 6 3 32 51 -9 -38 -57

2   Pass
%% x = eye(3); y_correct = [ -1 1 0; 0 -1 1; 1 0 -1]; assert(isequal(MatDiff(x),y_correct));

ans = -1 1 0 0 -1 1 1 0 -1

3   Pass
%% x = repmat(7, 7, 7); y_correct = repmat(0, 7, 7); assert(isequal(MatDiff(x),y_correct));

ans = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

4   Pass
%% x = diag(1:4); y_correct = [ -1 2 0 0; 0 -2 3 0; 0 0 -3 4; 1 0 0 -4;] assert(isequal(MatDiff(x),y_correct));

y_correct = -1 2 0 0 0 -2 3 0 0 0 -3 4 1 0 0 -4 ans = -1 2 0 0 0 -2 3 0 0 0 -3 4 1 0 0 -4