Additional test cases have been added.
This problem needs more tests. For instance, x = [1 10 3 0 2 4 0 8 -9 1] is a case with a non-positive difference, but a maximum change, which would make many solutions fail.
Reverse the Words (not letters) of a String
Program an exclusive OR operation with logical operators
Swap the input arguments
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Convert a vector into a number
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