Cody

Problem 43752. Vandermonde Matrix

Solution 1097069

Submitted on 3 Jan 2017 by Jean-Marie Sainthillier
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Test Suite

Test Status Code Input and Output
1   Pass
x = 1:5; y_correct = [1,1,1,1,1;1,2,4,8,16;1,3,9,27,81;1,4,16,64,256;1,5,25,125,625]; assert(isequal(vandimat(x),y_correct))

ans = 1 1 1 1 1 1 2 4 8 16 1 3 9 27 81 1 4 16 64 256 1 5 25 125 625
2   Pass
x = 1; y_correct = 1; assert(isequal(vandimat(x),y_correct))

ans = 1
3   Pass
x = ones(1,20); y_correct = ones(20); assert(isequal(vandimat(x),y_correct))

ans = Columns 1 through 16 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 17 through 20 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
4   Pass
x = 3.*ones(1,15); y_correct = repmat([1,3,9,27,81,243,729,2187,6561,19683,59049,177147,531441,1594323,4782969],15,1); assert(isequal(vandimat(x),y_correct))

ans = Columns 1 through 8 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 1 3 9 27 81 243 729 2187 Columns 9 through 15 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969 6561 19683 59049 177147 531441 1594323 4782969
5   Pass
x = [1 5 2 4 3]; y_correct = [1,1,1,1,1;1,5,25,125,625;1,2,4,8,16;1,4,16,64,256;1,3,9,27,81]; assert(isequal(vandimat(x),y_correct))

ans = 1 1 1 1 1 1 5 25 125 625 1 2 4 8 16 1 4 16 64 256 1 3 9 27 81

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