双打数组 - 最常用的值法？ （没有散列图或排序）

I have figured out how to create an array of integers and create a method to find the most frequent value in the array. Creating this method by creating another array used as a counter for each value. but how would I go about creating a method used to find the most frequent double in an array of DOUBLES.. without using hashmaps or sorting?I have figured out how to create an array of in