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Solution 194018

Submitted on 20 Jan 2013 by Vieniava

Correct

43Size
Leading solution size is 32.
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
 
%%
x=[1 5 9;2 6 10;3 nan 11;nan nan nan];
y_correct=[2 5.5 10];
y=average(x);
assert(isequalwithequalnans(y,y_correct))
y=average(x,1);
assert(isequalwithequalnans(y,y_correct))
y_correct=[5;6;7;nan];
y=average(x,2);
assert(isequalwithequalnans(y,y_correct))
y_correct=x;
y=average(x,3);
assert(isequalwithequalnans(y,y_correct))
ans =
    2.0000    5.5000   10.0000
ans =
     1
ans =
    2.0000    5.5000   10.0000
ans =
     2
ans =
     5
     6
     7
   NaN
ans =
     3
ans =
     1     5     9
     2     6    10
     3   NaN    11
   NaN   NaN   NaN
2
Pass
 
%%
x=cat(3,[1 5 9;NaN 6 10;NaN 7 NaN;4 8 12],...
 [13 17 21;14 18 22;15 19 NaN;16 20 24]);
y_correct=cat(3,[15 39 62]/6,[87 111 134]/6);
y=average(x);
assert(isequalwithequalnans(y,y_correct))
y=average(x,1);
assert(isequalwithequalnans(y,y_correct))
y_correct=cat(3,[5;8;7;8],[17;18;17;20]);
y=average(x,2);
assert(isequalwithequalnans(y,y_correct))
y_correct=[7 11 15;14 12 16;15 13 NaN;10 14 18];
y=average(x,3);
assert(isequalwithequalnans(y,y_correct))
ans(:,:,1) =
    2.5000    6.5000   10.3333
ans(:,:,2) =
   14.5000   18.5000   22.3333
ans =
     1
ans(:,:,1) =
    2.5000    6.5000   10.3333
ans(:,:,2) =
   14.5000   18.5000   22.3333
ans =
     2
ans(:,:,1) =
     5
     8
     7
     8
ans(:,:,2) =
    17
    18
    17
    20
ans =
     3
ans =
     7    11    15
    14    12    16
    15    13   NaN
    10    14    18
3
Pass
 
%%
x=zeros(2,1,0);
y_correct=mean(x);
y=average(x);
assert(isequalwithequalnans(y,y_correct))
y=average(x,1);
assert(isequalwithequalnans(y,y_correct))
y_correct=mean(x,2);
y=average(x,2);
assert(isequalwithequalnans(y,y_correct))
y_correct=mean(x,3);
y=average(x,3);
assert(isequalwithequalnans(y,y_correct))
ans =
   Empty array: 1-by-1-by-0
ans =
     1
ans =
   Empty array: 1-by-1-by-0
ans =
     2
ans =
   Empty array: 2-by-1-by-0
ans =
     3
ans =
   NaN
   NaN