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.
Back and Forth Rows
Remove the positive integers.
Sum of integers numbers
Rotate matrix by -90 degrees
Display positive elements of matrix.
Set x value to each even index of vector y.
Multiply two polynomials p and q given in in vector representation.
For given vectors x,y find coresponding spline coefficients.
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