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Remove Duplicates from Sorted Array. Easy. 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. Then return the number of unique elements in nums.
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Remove Duplicates from Sorted Array - Level up your coding...
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Given an integer array nums sorted in non-decreasing order,...
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May 30, 2024 · Learn how to remove duplicate elements from a sorted array using different approaches, such as extra space, set, binary search, and two-pointer algorithm. See C++, Java, Python, and Javascript code examples and time complexity analysis.
- Problem Statement
- Example
- Approach
- Complexity Analysis For Remove Duplicates from Sorted Array LeetCode Solution
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The Remove Duplicates from Sorted Array Leetcode Solution – says that you’re given an integer array sorted in non-decreasing order. We need to remove all duplicate elements and modify the original array such that the relative order of distinct elements remains the same and, report the value of kwhich denotes the first k elements of the original arr...
Explanation: 1. All unique elements are:- [3,4], Hence k = 2. 2. Fill all unique elements from the beginning of the input array keeping the relative orderof unique elements the same. 3. [3,4,_,_] is the modified array where _ denotes any element. 4. Note that, we need to take care that all unique elements must be placed among the first k place of t...
Idea:
1. The main idea is to solve this problem is to consider all subarrays one by one having the same elements. 2. Keep an index k = 0, which states that the first k elements are already taken. 3. Consider a subarray [i,j-1] where all elements have same value(x). Substitute nums[k] = x, and increment the index k by 1 since we are done with the current unique element and had placed this at the correct position. Also, change index i to j. 4. Repeat step 2 until we’re done with all the unique elemen...
Time Complexity
The time complexity of the above code is O(N) since, we are iterating for every element twice, hence O(2N) = O(N).
Space Complexity
The space complexity of the above code is O(1)since we’re not taking any extra space like a vector or an array to solve this problem. Reference: https://algodaily.com/lessons/using-the-two-pointer-technique
Learn how to solve the problem of removing duplicates from a sorted array in C++ and Java using the two pointer technique. See the problem statement, example, code, and complexity analysis.
Problem Description. The problem presents an integer array called nums that is sorted in non-decreasing order. The goal is to remove duplicates from nums in a way that each unique element appears only once while maintaining the relative order of elements.
Jan 17, 2023 · Given a sorted array arr[] of size N, the task is to remove the duplicate elements from the array. Examples: Input: arr[] = {2, 2, 2, 2, 2}Output: arr[] = {2}Explanation: All the elements are 2, So only keep one instance of 2.
Remove Duplicates from Sorted Array. Time: O (n) O(n) Space: O (n) O(n) C++ Java Python. 1 2 3 4 5 6 7 8 9 10 11 12. class Solution { public: int removeDuplicates(vector<int>& nums) { int i = 0; for (const int num : nums) if (i < 1 || num > nums[i - 1]) nums[i++] = num; return i; } };
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Dec 12, 2020 · Learn how to solve this easy problem from LeetCode using Python, Java, JavaScript or Kotlin. The solution involves modifying the input array in-place with O(1) extra memory and returning the new length.
