Yuvraj, this problem looks interesting, and I was looking forward to learning about ridge regularization. I suggest that you remove the code from the function template: you are giving us the answer! Also, several Cody players have recommended at least four tests to discourage lookup table solutions and other cheats.
The test suite's incorrect: the matrix inversion in the ridge estimator is missing.
Make a Palindrome Number
Encode Roman Numerals
Reverse the Words (not letters) of a String
Poker Series 01: isStraightFlush
MATLAB Basic: rounding IV
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