Test cases have been added to this problem.
I don"t want dumplings!
Swap two numbers
Find Out sum of principal diagonal element of given matrix
Sum of the Multiplication of Vectors
metre to feet converter
Calculate the values of a polynomial.
Opposite task convert binary numbers array into array of decimal numbers.
Set x value to each even index of vector y.
Count given word x in text.
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
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