A sequence of numbers is called an arithmetic progression if the difference between any two consecutive elements is the same.
Given an array of numbers
true if the array can be rearranged to form an arithmetic progression. Otherwise, return
Input: arr = [3,5,1] Output: true Explanation: We can reorder the elements as [1,3,5] or [5,3,1] with differences 2 and -2 respectively, between each consecutive elements.
Input: arr = [1,2,4] Output: false Explanation: There is no way to reorder the elements to obtain an arithmetic progression.
2 <= arr.length <= 1000
-106 <= arr[i] <= 106