Challenge: Overload the Operators for Vectors

Problem statement

In this challenge, you are required to overload the following three operators for the Vector class we implemented in the previous lesson:

• -: Unary negation operator
• -: Subtraction operator

In the case of vectors, - (unary negation) negates all the components of a vector. Whereas, - (subtraction) gives a vector as a result of subtraction b/w two vectors.

Input

• Unary negation operator: A vector
• Subtraction operator: Two vectors

Output

• Unary negation operator: A vector with every component negated.
• Subtraction operator: A resultant vector after a pairwise subtraction of two vectors.

Sample input

Suppose we have two vectors: vector1 and vector2.

• Unary negation operator:

  -vector1
  

• Subtraction operator:

  vector1 - vector2
  

Sample output

For example, if vector1 is 2_i - 3_j + 5_k and vector2 is -4_i - 2_j + 11_k then:

• Unary negation operator: -2_i + 3_j - 5_k
• Subtraction operator: 6_i - 1_j - 6_k

🧐 Note: Assume, that operands are of the correct data type.

Do not forget to use the concepts taught in the previous lessons. Feel free to view the solution, after giving it a few shots. Good luck!

Overload the negation operator

Override __neg__() to overload the - operator.