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December 17, 2023 - Create a Set called 'uniqueNums' to store unique elements encountered while iterating through the array.

Can you solve this real interview question? Median of Two Sorted Arrays - Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays.

2,750+ JavaScript solutions to various LeetCode problems - JoshCrozier/leetcode-javascript

April 9, 2021 - Can you solve this real interview question? Deepest Leaves Sum - Given the root of a binary tree, return the sum of values of its deepest leaves. Example 1: [https://assets.leetcode.com/uploads/2019/07/31/1483_ex1.png] Input: root = [1,2,3,4,5,null,6,7,null,null,null,null,8] Output: 15 Example 2: Input: root = [6,7,8,2,7,1,3,9,null,1,4,null,null,null,5] Output: 19 Constraints: * The number of nodes in the tree is in the range [1, 104]. * 1

Array Prototype Last - Write code that enhances all arrays such that you can call the array.last() method on any array and it will return the last element. If there are no elements in the array, it should return -1. You may assume the array ...

April 21, 2022 - Learn how to use modern JavaScript ES6 techniques like destructuring assignment syntax and the best array methods like splice by solving LeetCode problems.

April 6, 2019 - N-Repeated Element in Size 2N Array - You are given an integer array nums with the following properties: * nums.length == 2 * n. * nums contains n + 1 unique elements. * Exactly one element of nums is repeated n times.

October 29, 2024 - Here’s a curated list of ten ... with solutions and explanations. Given an array of integers and a target integer, return the indices of the two numbers such that they add up to the target....

Difficulty: · Medium · Array · Hash Table · String · Dynamic Programming · Backtracking · Depth-first Search · Two Pointers · Linked List

LeetCode Explore is the best place for everyone to start practicing and learning on LeetCode. No matter if you are a beginner or a master, there are always new topics waiting for you to explore.

10; } Output: [20,30] Explanation: const newArray = filter(arr, fn); // [20, 30] The function filters out values that are not greater than 10 Example 2: Input: arr = [1,2,3], fn = function firstIndex(n, i) { return i === 0; } Output: [1] Explanation: fn can also accept the index of each element In this case, the function removes elements not at index 0 Example 3: Input: arr = [-2,-1,0,1,2], fn = function plusOne(n) { return n + 1 } Output: [-2,0,1,2] Explanation: Falsey values such as 0 should be filtered out Constraints: * 0

Can you solve this real interview question? Build Array from Permutation - Given a zero-based permutation nums (0-indexed), build an array ans of the same length where ans[i] = nums[nums[i]] for each 0

November 3, 2024 - One of the most frequent mistakes ... dealing with arrays, developers often miss cases like empty arrays, arrays with a single element, or arrays with repeated elements....

March 21, 2022 - Plus One - You are given a large integer represented as an integer array digits, where each digits[i] is the ith digit of the integer. The digits are ordered from most significant to least significant in left-to-right order.

October 17, 2020 - Repeated DNA Sequences - The DNA sequence is composed of a series of nucleotides abbreviated as 'A', 'C', 'G', and 'T'. * For example, "ACGAATTCCG" is a DNA sequence. When studying DNA, it is useful to identify repeated sequences within the DNA.

November 22, 2023 - Otherwise, the current element is appended to the array associated with the corresponding key. The groupBy method returns the result object, which contains the elements grouped by the result of the function fn. https://leetcode.com/problems/group-by/description/?envType=study-plan-v2&envId=30-days-of-javascript

Boost your coding interview success with my definitive JavaScript walkthroughs tackling the top FAANG-level array problems on Leetcode! This complete series ...