Cody

# Problem 1842. rot45 : a different aproach

Solution 309481

Submitted on 22 Aug 2013 by Alfonso Nieto-Castanon
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### Test Suite

Test Status Code Input and Output
1   Pass
1

``` ans = 1 ```

2   Pass
%% x=[1 3;2 4]; y_correct=[0 3 0;1 0 4;0 2 0]; assert(isequal(rot45(x),y_correct)); 2

``` ans = 2 ```

3   Pass
%% for n=1:10 x=rand(n); y=rot45(rot45(x)); assert(isequal(x,rot90(y(n:2:end-n+1,n:2:end-n+1),-1))); end 3

``` ans = 3 ```

4   Pass
%% x=rand(5); i=[5 13 15 21 23 25 29 31 33 35 37 39 41 43 45 47 49 51 53 57 59 61 67 69 77]; j=[1 6 2 11 7 3 16 12 8 4 21 17 13 9 5 22 18 14 10 23 19 15 24 20 25]; y_correct=zeros(9); y_correct(i)=x(j); assert(isequal(rot45(x),y_correct)); 4

``` ans = 4 ```

5   Pass
%% x=rand(8); i=[8 22 24 36 38 40 50 52 54 56 64 66 68 70 72 78 80 82 84 86 88 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 138 140 142 144 146 148 154 156 158 160 162 170 172 174 176 186 188 190 202 204 218 ]; j=[1 9 2 17 10 3 25 18 11 4 33 26 19 12 5 41 34 27 20 13 6 49 42 35 28 21 14 7 57 50 43 36 29 22 15 8 58 51 44 37 30 23 16 59 52 45 38 31 24 60 53 46 39 32 61 54 47 40 62 55 48 63 56 64 ]; y_correct=zeros(15); y_correct(i)=x(j); assert(isequal(rot45(x),y_correct));

``` ```