JSDevLife

   A solution to LeetCode Problem 15. 3 Sum in JavaScript  If you're preparing for technical interviews or want to improve your coding skills, solving practice problems on LeetCode is a great way.  In this post, we'll discuss a solution to the "3 sum" problem on LeetCode. Problem Statement: Given an integer array  nums , return  an array   answer   such that   answer[i]   is equal to the product of all the elements of   nums   except   nums[i] . The product of any prefix or suffix of  nums  is  guaranteed  to fit in a  32-bit  integer. You must write an algorithm that runs in  O(n)  time and without using the division operation.   Example 1: Input: nums = [1,2,3,4] Output: [24,12,8,6] Example 2: Input: nums = [-1,1,0,-3,3] Output: [0,0,9,0,0]   Constraints: 2 <= nums.length <= 10 5 -30 <= nums[i] <= 30 The product of any prefix or suffix of  nums  ...

   A solution to LeetCode Problem 26. Remove Duplicates from the Sorted Array in JavaScript  Welcome to another blog post in our series on solving LeetCode problems in JavaScript! Today, we will be tackling Problem 26: Remove Duplicates from Sorted Array. In this problem, we are given a sorted array of integers and asked to remove any duplicates. The resulting array should be sorted and the length of the array should be returned. Problem Statement: 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 . Since it is impossible to change the length of the array in some languages, you must instead have the result be placed in the  first part  of the array  nums . More formally, if there are  k  elements after removing the duplicates, then the first...

   A solution to LeetCode Problem 56. Merge Intervals in JavaScript  In this problem, we are given an array of intervals, where each interval is an object with a start and end property. The intervals are not necessarily sorted. Our task is to merge any overlapping intervals and return the resulting array of intervals. Problem Statement: Given an array of  intervals  where  intervals[i] = [start i , end i ] , merge all overlapping intervals, and return  an array of the non-overlapping intervals that cover all the intervals in the input .   Example 1: Input: intervals = [[1,3],[2,6],[8,10],[15,18]] Output: [[1,6],[8,10],[15,18]] Explanation: Since intervals [1,3] and [2,6] overlap, merge them into [1,6]. Example 2: Input: intervals = [[1,4],[4,5]] Output: [[1,5]] Explanation: Intervals [1,4] and [4,5] are considered overlapping.   Constraints: 1 <= intervals.length <= 10 4 intervals[i].length == 2 0 <= start i <= end i ...

  A solution to leetcode Problem 118. Pascal's Triangle in JavaScript in JavaScript  Pascal's Triangle is a problem that asks us to generate the first n rows of Pascal's Triangle. Pascal's Triangle is a triangular array of integers that is formed by starting with a row of 1 and then adding the two numbers above it to get the next row. Problem Statement: Given an integer  numRows , return the first numRows of  Pascal's triangle . In  Pascal's triangle , each number is the sum of the two numbers directly above it as shown:   Example 1: Input: numRows = 5 Output: [[1],[1,1],[1,2,1],[1,3,3,1],[1,4,6,4,1]] Example 2: Input: numRows = 1 Output: [[1]]   Constraints: 1 <= numRows <= 30