Given a number, return the number of closed 'circles' in the base 10 numerical representation.
Note: the number 4 has no circles
8819 -> 5
Interpolating on a string (the ASCII values) is an interesting idea even though the long interpolation string could be reduced by subtracting '0', but at the expense of a "longer" solution.
Find relatively common elements in matrix rows
Scoring for oriented dominoes
Given a window, how many subsets of a vector sum positive
Getting the indices from a matrice
Maximum value in a matrix
Solve the Sudoku Row
Roll the Dice!
Guess the Coefficients!
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