Скачать или смотреть LeetCode Problem 26. Remove Duplicates from Sorted Array || Java Solution Walkthrough

LeetCode is a great platform for people who want general coding practice, whether that be for interviews or just wanting to practice their problem solving. I will be taking you through all the steps of finding the optimal solution to each problem on the site following a logical ordering setout by LeetCode themselves.

In this video, we are going over the problem 26. Remove Duplicates from Sorted Array, where the goal is to remove all of the duplicate values from the nums array in place, meaning we cannot create a new array to solve the problem. While we are finding duplicates, we need to count each instance of a new unique number to set to k when we return the function. The custom judge will compare the first k elements of the array, so we want to put all of the unique elements at the first k elements of the nums array.

We want to use what we have gathered from the description and constraints. The biggest things to note is that the array nums is starting out already sorted from smallest to largest for us, this is significant because any duplicate numbers will be stored next to one another inside of the array. Meaning we can skip over the amount of duplicate numbers we find and start placing non-duplicate numbers after the string of duplicates. Also, the length of the nums array will also always be at least 1, meaning no matter what we do, we should always have at least 1 unique value inside of the nums array. Using this knowlege we can think about our psuedo code.

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