Arrange Vector in descending order
Return the first and last characters of a character array
Multiply 2 numbers
Find the area of a triangle
Values in Array
Decipher the number 2 - 3 keys
Cipher or Decipher the number according to the second input - 3 keys - order [1 2 3 2 1 2 3 ......]
Malus’ Law (theta) between polarizations
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