50
Given a nonempty array of positive integers, "increment" it once as follows:
If all the array elements are equal, append a 1 to the end of the array. For example:
[1] -> [1, 1]
[2] -> [2, 1]
[1, 1] -> [1, 1, 1]
[3, 3, 3, 3, 3] -> [3, 3, 3, 3, 3, 1]
Else, increment the first element in the arr...