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Solution 180941

Submitted on 22 Dec 2012 by Will

Correct

103Size
Leading solution size is 30.
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test
Code Input and Output
1
Pass
 
%%
n = 4;
d = 2;
%p = isprime(spiral(n));imagesc(p)
assert(isequal(prime_spiral(n),d))
p =
     1     0     0     0
     0     0     1     1
     1     0     1     0
     0     0     0     1
p2 =
     0     0     0     1
     1     1     0     0
     0     1     0     1
     1     0     0     0
c =
    [4x4 logical]    [4x4 logical]    [4x4 logical]    [4x4 logical]
2
Pass
 
%%
n = 7;
d = 4;
assert(isequal(prime_spiral(n),d))
p =
     1     0     0     0     1     0     0
     0     0     0     1     0     0     0
     1     0     1     0     0     0     0
     0     1     0     0     1     1     0
     0     0     1     0     1     0     1
     0     1     0     0     0     1     0
     1     0     0     0     0     0     1
p2 =
     0     0     1     0     0     0     1
     0     0     0     1     0     0     0
     0     0     0     0     1     0     1
     0     1     1     0     0     1     0
     1     0     1     0     1     0     0
     0     1     0     0     0     1     0
     1     0     0     0     0     0     1
c =
    [7x7 logical]    [7x7 logical]    [7x7 logical]    [7x7 logical]
3
Pass
 
%%
n = 13;
d = 5;
assert(isequal(prime_spiral(n),d))
p =
     1     0     0     0     0     0     1     0     0     0     1     0     0
     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     0     1     0     0     0     0     0     1     0     0     0     0
     0     1     0     1     0     0     0     1     0     0     0     1     0
     0     0     1     0     0     0     1     0     0     0     0     0     0
     0     1     0     1     0     1     0     0     0     0     0     0     0
     1     0     0     0     1     0     0     1     1     0     1     0     1
     0     0     0     0     0     1     0     1     0     1     0     0     0
     1     0     1     0     1     0     0     0     1     0     0     0     0
     0     1     0     1     0     0     0     0     0     1     0     1     0
     0     0     0     0     0     0     1     0     1     0     0     0     1
     0     1     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     0     1     0     1     0     0     0     0
p2 =
     0     0     1     0     0     0     1     0     0     0     0     0     1
     0     0     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     0     1     0     0     0     0     0     1     0     0
     0     1     0     0     0     1     0     0     0     1     0     1     0
     0     0     0     0     0     0     1     0     0     0     1     0     0
     0     0     0     0     0     0     0     1     0     1     0     1     0
     1     0     1     0     1     1     0     0     1     0     0     0     1
     0     0     0     1     0     1     0     1     0     0     0     0     0
     0     0     0     0     1     0     0     0     1     0     1     0     1
     0     1     0     1     0     0     0     0     0     1     0     1     0
     1     0     0     0     1     0     1     0     0     0     0     0     0
     0     0     0     0     0     0     0     1     0     0     0     1     0
     0     0     0     0     1     0     1     0     0     0     0     0     0
c =
    [13x13 logical]    [13x13 logical]    [13x13 logical]    [13x13 logical]
4
Pass
 
%%
n = 52;
d = 6;
assert(isequal(prime_spiral(n),d))
p =
  Columns 1 through 16
     1     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     1     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     1     0     0     0     0     0     0     0     1     0     0     0     0     0     1
     0     0     1     0     0     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     1     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     1     0     0     0     1     0     1     0     0     0
     0     1     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     1     0     0     0     0     0     1     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     0     0     1     0     1
     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     1     0     0     0     0     0     0     0     0     0     0     0     0
     1     0     1     0     0     0     0     0     1     0     1     0     0     0     0     0
     0     1     0     0     0     0     0     1     0     0     0     1     0     1     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     1     0     0     0
     0     1     0     0     0     0     0     0     0     1     0     1     0     1     0     1
     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     1     0     0     0     0     0     1
     0     0     0     0     0     0     1     0     1     0     0     0     0     0     1     0
     0     0     0     0     0     1     0     1     0     0     0     0     0     0     0     0
     1     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     1     0     0     0     0     0     1     0     0     0     0     0     1     0     0
     0     0     1     0     1     0     0     0     0     0     1     0     0     0     1     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     1     0     1     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     0     0     1     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     1     0     0     0     1     0     1     0     1     0     1
     0     0     1     0     1     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     1     0     0     0     0     0     1     0     0     0     1     0     0     0     1     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     1     0     0     0
     0     0     0     1     0     1     0     1     0     1     0     0     0     0     0     0
     0     0     1     0     1     0     0     0     0     0     1     0     0     0     1     0
     0     0     0     1     0     0     0     0     0     1     0     0     0     0     0     1
     0     0     1     0     0     0     1     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     1     0     0     0     1     0     1     0     0
     0     0     0     0     0     0     1     0     0     0     0     0     1     0     0     0
     0     0     0     0     0     1     0     1     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     1     0     1
     0     0     0     0     0     0     1     0     0     0     0     0     1     0     1     0
     0     1     0     0     0     0     0     1     0     0     0     0     0     1     0     1
     0     0     0     0     0     0     0     0     0     0     0     0     1     0     0     0
     0     1     0     0     0     1     0     0     0     1     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     0     0     1     0     1     0     0     0     0     0     0
     1     0     0     0     0     0     1     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     1     0     0     0     1     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     1     0     0     0     1
  Columns 17 through 32
     0     0     0     0     0     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     1     0     0     0     0     0     1     0     0     0     1     0     1
     0     0     1     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     1     0     1     0     0     0     1     0     0     0     0     0     0
     0     0     0     0     1     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     1     0     0     0     1
     1     0     0     0     0     0     1     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     1     0     0     0     0     0     0     0     0     0     0     0     1     0
     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     1     0     0     0     1     0     0     0     0     0     1     0     0     0     0     0
     0     0     0     1     0     1     0     0     0     1     0     1     0     0     0     0
     0     0     1     0     0     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     1     0     0     0     0     0     1     0     0     0     1     0     1
     1     0     0     0     0     0     0     0     0     0     0     0     1     0     1     0
     0     0     0     0     0     0     0     0     0     1     0     1     0     0     0     0
     0     0     0     0     1     0     1     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     1     0     0     0     1     0     1     0     0     0     0
     0     0     1     0     0     0     0     0     0     0     0     0     0     0     1     0
     0     1     0     1     0     0     0     0     0     1     0     0     0     1     0     0
     0     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     1     0     0     0     1     0     0     0     0     0     1     0     0     0     0
     1     0     0     0     1     0     1     0     0     0     1     0     0     0     1     0
     0     0     0     0     0     1     0     0     0     1     0     0     0     0     0     0
     0     0     0     0     1     0     1     0     1     0     0     0     0     0     0     0
     0     0     0     1     0     0     0     1     0     0     1     1     0     1     0     1
     0     0     0     0     0     0     0     0     1     0     1     0     1     0     0     0
     0     1     0     1     0     1     0     1     0     0     0     1     0     0     0     0
     1     0     0     0     1     0     1     0     0     0     0     0     1     0     1     0
     0     0     0     0     0     0     0     0     0     1     0     1     0     0     0     1
     0     0     1     0     1     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     1     0     1     0     0     0     0
     0     0     1     0     0     0     1     0     1     0     0     0     0     0     0     0
     0     1     0     0     0     0     0     1     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     1     0     0     0     1     0     1     0
     0     0     0     1     0     0     0     0     0     0     0     1     0     0     0     0
     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     1     0     1     0     0     0     0     0     1     0     0     0     0
     1     0     0     0     0     0     0     0     0     0     0     0     1     0     1     0
     0     0     0     0     0     0     0     1     0     0     0     1     0     0     0     0
     0     0     0     0     0     0     0     0     1     0     0     0     1     0     1     0
     0     0     0     0     0     1     0     0     0     1     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     1     0     0     0     1     0     1     0     0     0     0
     0     0     1     0     0     0     1     0     1     0     0     0     1     0     0     0
     0     0     0     0     0     0     0     1     0     0     0     1     0     0     0     0
     1     0     0     0     0     0     1     0     0     0     0     0     1     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     1     0     0     0     0
     0     0     0     0     1     0     0     0     0     0     0     0     0     0     1     0
     0     0     0     1     0     0     0     0     0     1     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     1...
5
Pass
 
%%
n = 81;
d = 9;
assert(isequal(prime_spiral(n),d))
p =
  Columns 1 through 16
     1     0     0     0     0     0     0     0     0     0     1     0     0     0     0     0
     0     1     0     0     0     0     0     0     0     0     0     1     0     0     0     0
     0     0     0     0     0     0     1     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     1     0     0     0     0     0     1
     0     0     1     0     0     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     1     0     0     0     0     0     0     0     0
     0     0     1     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     1     0     0     0     0     0     0     0     0
     1     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     1     0     1     0     0     0     1     0     0
     0     0     0     0     0     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     1     0     1     0     0     0     0     0     1     0     1     0     0     0     0     0
     0     1     0     0     0     0     0     0     0     0     0     0     0     1     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     1     0     1
     0     0     1     0     0     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     1
     0     0     0     0     0     0     0     0     0     0     0     0     1     0     1     0
     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     1     0     0     0     0     0     1     0     0     0     1     0     1     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     1     0
     0     0     0     1     0     0     0     0     0     0     0     0     0     0     0     1
     0     0     0     0     1     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     0     0     1     0     0     0     0     0     1     0     1     0     1     0     1
     0     0     1     0     1     0     0     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     1     0     0     0     1     0     0     0     1     0     0     0     0     0     1     0
     0     1     0     0     0     0     0     0     0     0     0     0     0     1     0     0
     1     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     1     0     1     0     1     0     1     0     0     0     0     0     0     0     0
     0     0     1     0     1     0     0     0     0     0     1     0     0     0     0     0
     0     0     0     1     0     0     0     0     0     1     0     0     0     0     0     1
     0     0     0     0     0     0     1     0     1     0     0     0     1     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     1     0     0     0
     0     0     0     0     0     1     0     1     0     1     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     1     0     1     0     0     0     1     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     1     0     0     0     1     0     1     0     0     0     1     0     1     0
     0     1     0     0     0     1     0     0     0     0     0     1     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     1     0     0     0     0     0     1     0     1     0     1
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     1     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     1     0     0     0     1     0     0     0     1     0     0     0     0     0
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     0     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     1     0     1     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     1     0     0     0     0     0     0     0     0     0     1     0
     0     0     0     1     0     0     0     0     0     1     0     0     0     0     0     0
     1     0     1     0     0     0     0     0     0     0     1     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     1     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     1     0     0     0     0     0     1     0     0
     0     0     0     0     0     0     0     0     1     0     1     0     0     0     1     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     1     0     0     0     0     0     1     0     0     0     0     0     0     0     1     0
     0     0     0     0     0     0     0     0     0     0     0     1     0     0     0     0
     0     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0
     0     1     0     0     0     0     0     0     0     1     0     1     0     0     0     1
     0     0     1     0     1     0     0     0     0     0     1     0     0     0     1     0
     0     0     0     0     0     0     0     0     0     1     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     1     0     1     0     0     0     0     0     1     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     1     0     0     0
     0     0     0     0     0     0     0     0     0     1     0     0     0     0     0     1
     0     0     0     0     0     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     1     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     1     0     1     0     0     0     0     0     0     0     1     0     1     0
     0     1     0     0     0     1     0     1     0     0     0     0     0     0     0     1
     0     0     0     0     0     0     0     0     0     0     1     0     0     0     0     0
     0     1     0     1     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     1     0     0     0     0     0     0     0     1     0     0     0     0     0
     0     0     0     1     0     0     0     0     0     1     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     1     0     0     0     0     0     1     0     0
     0     0     0     0     1     0     0     0     0     0     0     0     1     0     0     0
  Columns 17 through 32
     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
     1     0     1     0     0     0     0     0     0     0     0     0     1     0     1     0
     0     0     0     0     0     1     0     0     0     1     0     0     0     0     0     0
     0     0     0     0     1     0     0     0     0     0     1     0     1     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     1     0     0     0     0
     1     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     1     0     0     0     0     0     1
     0     0     0     0     0     0     0     0     1     0     0     0     0     0     0     0
     0     0     0     1     0     1     0     0     0     1     0     0     0     0     0     1
     0     0     0     0     1     0     1     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     1     0     0     0     0     0     1     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     1     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     1     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
     1     0     0     0     0     0     0     0     1     0     0     0     0     0     1     0
     0     1     0     0     0     0     0     1     0     0     0     0     0     0     0     0
     0     0     1     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     1     0     0     0...