Define a 1-D array named peopleTypes that can store a maximum of 50 integer values that will be entered at the keyboard. Enter a series of 1's, 2's, 3's and 4's into the array, where a 1 represents an infant, a 2 represents a child, a 3 represents a teenager, and a 4 represents an adult that was present at a college fair. Any other integer value should not be accepted as valid input, and data entry should stop when a negative value has been entered. Your Java program should count the number of each 1,2,3 and 4 in the array and output a list of how many infants, children, teenagers, and adults were at the college fair.