Find duplicate pairs in array.
In-depth solution and explanation for LeetCode 442.
Find duplicate pairs in array Can you solve this real interview question? Find the Duplicate Number - Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive. Then we need to pair this element with all the elements in the array from index 0 to N-1. Jan 7, 2025 · Finding duplicate elements in an array is a common problem in computer science. Below is the step by step approach: Traverse the array and select an element in each traversal. Jul 22, 2025 · Given an array arr [] of integers of size n, where each element is in the range 1 to n and each element can occur at most twice, find all elements that appear twice in the array. For instance, if we have an array [1, 2, 3, 2, 5, 1], we aim to write a Python program that prints the duplicates, in this case [1, 2]. Intuitions, example walk through, and complexity analysis. In this blog post, I'll be elucidating how to identify similar items within an array. Jul 23, 2025 · The main idea is to first sort the array arr[] and then iterate through it to check if any adjacent elements are equal. In this article, we will explore different methods for finding duplicates in arrays, including using hash tables, sorting, and using built-in functions. ibazmofijxezjzmypyemrvgyzohxkwtoukdnonuiumdfpqyuwtilaqstjpfybdbvcuatxxa