Cody

Problem 44887. Given a matrix A (size m x n) create a matrix B (size m+2 x n+2) which consists of matrix A surrounded by zeros. See Example below:

Solution 1814146

Submitted on 13 May 2019 by anan jeraise
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Test Suite

Test Status Code Input and Output
1   Pass
x = [1]; y_correct = [0 0 0 0 1 0 0 0 0]; assert(isequal(zeroWrap(x),y_correct))

0 0 0 0 1 0 0 0 0

2   Pass
x = randi(10,4,5); m=zeroWrap(x); assert(isequal(m(2:end-1,2:end-1),x))

0 0 0 0 0 0 0 0 10 4 4 9 10 0 0 3 6 3 9 10 0 0 9 4 5 5 4 0 0 1 2 5 3 1 0 0 0 0 0 0 0 0

3   Pass
x = randi(10,4,5); m=zeroWrap(x); assert(isequal(sum(m(1,:)),0))

0 0 0 0 0 0 0 0 6 5 4 1 1 0 0 9 4 2 4 5 0 0 7 9 5 5 8 0 0 3 9 5 8 6 0 0 0 0 0 0 0 0

4   Pass
x = randi(10,4,5); m=zeroWrap(x); assert(isequal(sum(m(end,:)),0))

0 0 0 0 0 0 0 0 10 8 8 1 2 0 0 6 4 1 5 2 0 0 3 4 3 5 10 0 0 8 1 5 3 9 0 0 0 0 0 0 0 0

5   Pass
x = randi(10,4,5); m=zeroWrap(x); assert(isequal(sum(m(:,1)),0))

0 0 0 0 0 0 0 0 2 7 7 2 9 0 0 3 7 8 2 2 0 0 10 1 10 1 1 0 0 7 4 4 3 2 0 0 0 0 0 0 0 0

6   Pass
x = randi(10,4,5); m=zeroWrap(x); assert(isequal(sum(m(:,end)),0))

0 0 0 0 0 0 0 0 10 6 8 6 6 0 0 6 2 9 10 9 0 0 1 1 5 6 5 0 0 3 4 6 6 3 0 0 0 0 0 0 0 0

7   Pass
x = randi(10,4,5); m=zeroWrap(x); assert(isequal(size(m)-2,size(x)))

0 0 0 0 0 0 0 0 9 6 1 9 6 0 0 9 1 5 8 4 0 0 7 2 2 7 7 0 0 7 5 5 8 8 0 0 0 0 0 0 0 0