26. Remove Duplicates from Sorted Array - LeetCode - Medium Solve this problem in LeetCode Problem Description: 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. Consider the number of unique elements of nums to be k, to get accepted, you need to do the following things: Change the array nums such that the first k elements of nums contain the unique elements in the ..read more

    128. Longest Consecutive Sequence - LeetCode - Medium Solve this problem in LeetCode Problem Description: Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. You must write an algorithm that runs in O(n) time. Example 1: Input: nums = [100,4,200,1,3,2] Output: 4 Explanation: The longest consecutive elements sequence is [1, 2, 3, 4]. Therefore its length is 4. Example 2: Input: nums = [0,3,7,2,5,8,4,6,0,1] Output: 9 Constraints: 0 <= nums.length <= 10^5 -10^9 <= nums[i] <= 10^9 Approach: In ..read more

   242. Valid Anagram - LeetCode - Easy Solve this problem in LeetCode Problem Description: Given two strings s and t, return true if t is an anagram of s, and false otherwise. An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. Example 1: Input: s = "anagram", t = "nagaram" Output: true Example 2: Input: s = "rat", t = "car" Output: false   Constraints: 1 <= s.length, t.length <= 5 * 10^4 s and t consist of lowercase English letters. Approach: Two words ..read more

   217. Contains Duplicate - LeetCode - Easy Solve this problem in LeetCode Problem Description: Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct. Example 1: Input: nums = [1,2,3,1] Output: true Example 2: Input: nums = [1,2,3,4] Output: false Example 3: Input: nums = [1,1,1,3,3,4,3,2,4,2] Output: true Constraints: 1 <= nums.length <= 10^5 -10^9 <= nums[i] <= 10^9 Approach: The problem becomes easy if you use Set Data Structure. Set has inbuilt methods for checkin ..read more

   3. Longest Substring Without Repeating Characters - LeetCode - Medium Problem Description: Given a string s, find the length of the longest substring without repeating characters. Example 1: Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Example 2: Input: s = "bbbbb" Output: 1 Explanation: The answer is "b", with the length of 1. Example 3: Input: s = "pwwkew" Output: 3 Explanation: The answer is "wke", with the length of 3. Notice that the answer must be a substring, "pwke" is a subsequence and not a substring.   Constr ..read more

   2. Add Two Numbers  - LeetCode - Medium Problem Description: You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order, and each of their nodes contains a single digit. Add the two numbers and return the sum as a linked list. You may assume the two numbers do not contain any leading zero, except the number 0 itself.  Example 1: Input: l1 = [2,4,3], l2 = [5,6,4] Output: [7,0,8] Explanation: 342 + 465 = 807. Example 2: Input: l1 = [0], l2 = [0] Output: [0] Example 3: Input: l1 = [9,9,9,9,9,9 ..read more

    Accenture Interview Experience: In this post, I am sharing my personal Accenture interview experience which I got through an off-campus Accenture drive for ASE in July 2023. ASE stands for Associate Software Engineer, which offers a 4.5 LPA salary in 2023. Let's take a look at the eligibility criteria, Selection Process, and my experience. Eligibility Criteria : All streams/branches of B.E/B.Tech/M.E/M.Tech, MCA, and M.Sc. (CSE, IT only) from 2022 & 2023 years of pass outs with full-time education only (Part-time and distance educations are not considered)  &nbs ..read more

   Hexaware Interview Experience: In this post, I am sharing my personal Hexaware interview experience which I got through PGET Program in 2022. PGET stands for Premier Graduate Engineer Trainee, which offers 6 LPA salary in 2022. There is another GET program which stands for Graduate Engineer Trainee that offers 4 LPA. My college was eligible for PGET Program. Let's take a look at the eligibility criteria, Selection Process, and my experience. Eligibility Criteria : 1.  60 % throughout (10th to highest Degree). 2.  Branches eligible:  CS, IT, EC, EE & EX ..read more

  Cisco Interview Experience: In this post, I am sharing my personal Cisco interview experience which I got through Cisco Ideathon 2022. The program is a great opportunity for students with potential and creativity to be a part of Cisco’s technological innovation. The qualifiers of the Cisco Ideathon are awarded an internship opportunity followed by full-time placement within Cisco. Let's take a look at the eligibility criteria, Selection Process, and my experience. Eligibility Criteria : 1.  7.0 CGPA in B.Tech. till the current semester. No criteria for 10th and 12th 2.  ..read more

Expected move: Problem Description: You are given a fair coin and two integers X and N. You repeatedly flip the coin and perform the following operation based on the result: ·       If it lands on heads, then X will increase by 1. However, if X=N then X will not change. ·       If it lands on tails, X will decrease by 1. You stop as soon as the value of X becomes 1. Find the expected number of coin flips. Note that it is ..read more