write an algorithm to determine is "happy" ... a number is happy if the sum of the square of the digits ever equals one. An example of a happy number is 19: 1^2 + 9^2 = 82 8^2 + 2^2 = 68 6^2 + 8^2 = 100 1^2 + 0^2 + 0^2 = 1 If it is not happy then it will eventually hit repeat back to a number that it already saw