Explanation: Total number of unique elements are 3, i.e[1,2,3] and Therefore return 3 after assigning [1,2,3] in the beginning of the array. Explanation: Total number of unique elements are 4, i.e[1,2 ...

//Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. //Do not allocate extra space for another array, you must do this by ...