Cody

# Problem 42992. S-T-R-E-T-C-H I-T O-U-T

Solution 981127

Submitted on 23 Sep 2016 by goc3
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### Test Suite

Test Status Code Input and Output
1   Pass
x = [1 5 2 4 3];n=1; y_correct = [1 3 5 3.5 2 3 4 3.5 3]; assert(isequal(stretch_it_out(x,n),y_correct))

y = 1.0000 3.0000 5.0000 3.5000 2.0000 3.0000 4.0000 3.5000 3.0000

2   Pass
x = [1 5 2 4 3];n=2; y_correct=[1 2+1/3 3+2/3 5 4 3 2 2+2/3 3+1/3 4 3+2/3 3+1/3 3]; y=abs(stretch_it_out(x,n)-y_correct); assert(max(y)<1e-9)

y = Columns 1 through 9 1.0000 2.3333 3.6667 5.0000 4.0000 3.0000 2.0000 2.6667 3.3333 Columns 10 through 13 4.0000 3.6667 3.3333 3.0000

3   Pass
k=ceil(5*rand)+1 x=1:k:121 n=k-1; assert(isequal(stretch_it_out(x,n),1:121))

k = 3 x = Columns 1 through 16 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 Columns 17 through 32 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 Columns 33 through 41 97 100 103 106 109 112 115 118 121 y = Columns 1 through 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Columns 17 through 32 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Columns 33 through 48 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Columns 49 through 64 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Columns 65 through 80 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Columns 81 through 96 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 Columns 97 through 112 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 Columns 113 through 121 113 114 115 116 117 118 119 120 121

4   Pass
x=[1 -1 1 -1 1 -1 1];n=3; y_correct=[1 0.5 0 -0.5 -1 -0.5 0 0.5 1 0.5 0 -0.5 -1 -0.5 0 0.5 1 0.5 0 -0.5 -1 -0.5 0 0.5 1]; assert(isequal(stretch_it_out(x,n),y_correct))

y = Columns 1 through 9 1.0000 0.5000 0 -0.5000 -1.0000 -0.5000 0 0.5000 1.0000 Columns 10 through 18 0.5000 0 -0.5000 -1.0000 -0.5000 0 0.5000 1.0000 0.5000 Columns 19 through 25 0 -0.5000 -1.0000 -0.5000 0 0.5000 1.0000