Chapter 20, Problem 6ICA

Write a function named CLASS that will accept a vector of unknown length called INT and return four variable containing the following information about the contents of the vector.

• NotInt––contains the number of values in INT that are not integers.
• NotPos––contains the number of values in INT that are zero or less.
• TooBig––contains the number of values in INT that are greater than 99. Note that NotInt has priority over NotPos and TooBig. For example, an element in INT equal to –9.43 would add one to NotInt, but not to NotPos.
• Ints––a 99 element vector in which each element contains the number of occurrences of the element’s index value in INT. For example. If INT contains a total of fourteen 57s. Ints (57) will contain 14.

Example:

All other elements of Ints contain a zero.

Note that the sum of all elements in the returned variable should equal the number of elements in INT.

You may not use any built in functions to count the number of occurrences of each integer between 1 and 99, nor may you use any function whose sole purpose is to determine if a value is an integer or not. You may use other functions, however.