Count number of words in string
'hi', answer is 1
'hi hi', answer is 2
'I enjoy cody', answer is 3
Tell me the slope
Check if number exists in vector
Reverse the elements of an array
Summation of array
Rotate Matrix @180 degree
Find the 9's Complement
Convert to Binary Coded Decimal
find out eigenvector of matrix
Find out phase angle of second order system.
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