Cody

# Problem 1961. Finding neighbors of [-1:1] in a matrix....

Solution 2242769

Submitted on 29 Apr 2020 by Chi Zhang
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### Test Suite

Test Status Code Input and Output
1   Pass
x = [1 2 1; 5 6 7; 2 3 6]; output = [1 1 1; 1 1 1; 1 1 1] assert(isequal(neighbors(x),output))

output = 1 1 1 1 1 1 1 1 1 a1 = 4 4 6 -3 -3 -1 a2 = 1 -1 1 1 1 3 a1 = 2×3 logical array 0 0 0 0 0 1 a2 = 3×2 logical array 1 1 1 1 1 0 n = 3 y = 3×3 logical array 1 1 1 1 1 1 1 1 1

2   Pass
x = [8 8 8; 4 4 4; 1 9 7] output = [1 1 1; 1 1 1; 0 0 0] assert(isequal(neighbors(x),output))

x = 8 8 8 4 4 4 1 9 7 output = 1 1 1 1 1 1 0 0 0 a1 = -4 -4 -4 -3 5 3 a2 = 0 0 0 0 8 -2 a1 = 2×3 logical array 0 0 0 0 0 0 a2 = 3×2 logical array 1 1 1 1 0 0 n = 3 y = 3×3 logical array 1 1 1 1 1 1 0 0 0

3   Pass
x = [1 8 5; 4 10 22; 1 66 7] output = [0 0 0; 0 0 0; 0 0 0] assert(isequal(neighbors(x),output))

x = 1 8 5 4 10 22 1 66 7 output = 0 0 0 0 0 0 0 0 0 a1 = 3 2 17 -3 56 -15 a2 = 7 -3 6 12 65 -59 a1 = 2×3 logical array 0 0 0 0 0 0 a2 = 3×2 logical array 0 0 0 0 0 0 n = 3 y = 3×3 logical array 0 0 0 0 0 0 0 0 0

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