matrix in test case 3 is magical?
sum first circle=73
sum second circle =61....
The test case #5 in is not a magic circle because its radii are not equal (column 3 should be made of two 69s as are all the others, but instead they are 82 and 56). Please fix the test suite whenever possible.
Find relatively common elements in matrix rows
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Set some matrix elements to zero
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is the number happy?
Convert vector datasets to plot with imagesc instead of scatter
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