In flow i written code, now i don't understand why it working

Question

Given an integer array nums sorted in non-decreasing order, remove the duplicates in-place such that each unique element appears only once. The relative order of the elements should be kept the same.
Return k after placing the final result in the first k slots of nums.
https://code.sololearn.com/caYlYmfZOIlm/?ref=app

Answer 1

Prashant Priyadarshi the code is hard to read, isn't it? I took the liberty to rearrange it for my own understanding. Maybe you would benefit from seeing the revision:

int i=0;
for (int j = 1; j<nums.Length; j++)
if (nums[j]!=nums[i])
nums[++i] = nums[j];
return i+1;