a) Write a method encrypt(String text, int key) that returns a String. This method does two things to the
1. First, it reverses the order of its words (“hello there” becomes “there hello”).
2. The second thing is incrementing the characters’ ascii code by key. For example, if the key is
equal to 2, “hello” becomes “jgnnq” (since ‘h’ + 2 = ‘j’ and so on). Note that this second step
does not apply to the space character so a space remains a space.
For example, "Humming birds" for a key equal to 4 becomes: "fmvhw Lyqqmrk".
b) Write a test program that prompts the user to enter a line of text and a key then calls the method
encrypt to display the encryption of the input text.
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