Most nonzero elements in row
Back to basics 15 - Benchmark
How many jokers?
Length of a short side
Decide whether determinant is zero.
For given vectors x,y find coresponding spline coefficients.
Count given word x in text.
Form a square matrix from four square sub-matrices
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
Replace x value into y value in string text.
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