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 2884139

Submitted on 27 Aug 2020 by Jerry Wright
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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))

y = 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))

y = 0 0 0 0 0 0 0 0 3 1 9 4 3 0 0 7 9 8 3 10 0 0 2 5 9 2 7 0 0 6 8 7 5 9 0 0 0 0 0 0 0 0

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

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

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

y = 0 0 0 0 0 0 0 0 10 5 9 4 5 0 0 9 10 10 10 8 0 0 2 1 3 6 6 0 0 2 10 6 2 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))

y = 0 0 0 0 0 0 0 0 5 9 1 3 4 0 0 10 5 4 8 9 0 0 10 7 1 1 4 0 0 1 4 4 1 9 0 0 0 0 0 0 0 0

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

y = 0 0 0 0 0 0 0 0 4 9 10 7 4 0 0 9 2 10 7 3 0 0 6 4 5 4 9 0 0 8 5 8 1 8 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)))

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