Count how many times given word x repeats in text.
The phrasing of the Problem Statement is not correct. The string "When you finish ..., you will be told .... You can then .... You can also ...." contains FOUR instances of the WORD "you". "You", "YOU" and "you" are all examples of the _word_ "you". The Problem Statement should say that the player must find occurrences of the provided text-pattern of the same case within the given text.
Reverse the vector
Remove the Zero
Product of Array
Sum positive elements of matrix.
Solve expression II
Delete x value in given vector y.
For given xx,x, y vectors build spline of x and y and find yy values for xx vector.
For given vectors x,y find coresponding spline coefficients.
Multiply two polynomials p and q given in in vector representation.
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