题解 | #蛇形矩阵#

num_1= input('');
A_out = zeros(num_1,num_1);
A_out(1,1) = 1;
num_cal = 2;
for ii = 2 : num_1
   A_out(ii,1) = A_out(ii-1,1)+ii-1;
end
for ii = 2 : num_1
   A_out(1,ii) = A_out(1,ii-1)+ii;
end

for jj = 2 : num_1-1
   for ii = 2 : num_1-1
       if (ii + jj) <= (num_1 +1)
         A_out(ii,jj) = A_out(ii+1,jj-1)+1;
       end
   end
end

for ii1 = 1 : num_1
   
for ii2 = 1 : num_1
  if (ii2 + ii1) <= (num_1 +1)
   printf("%d ",A_out(ii1,ii2))
 end
end
printf("\n")
end