Problem description says the input can be a 9x9 matrix, but the test suite gives a 3x3 instead.
No 3x3 matrix in the description
3x3 for test
The second test case of matrix is not required..that never happens with sudoku. Only rows and columns should be inputs.
I've always wanted to create an algorithm to solve sudoku
neat & quick
This is really smart!
Looking at the test cases first will save lots of complications
Multiply a column by a row
Determine the square root
What is Sum Of all elements of Matrix
Replacing a row
Determine if a Given Number is a Triangle Number
Cache me Outside
Triangle Numbers Below N
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Return the first and last character of a string
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