Problem Statement Min Cost Climbing Stairs LeetCode Solution – An integer array cost is given, where cost[i] is the cost of ith step on a staircase. Once you pay the cost, you can either climb one or two steps. You can either start from the step with index 0, or the step with …
Problem Statement Number of Subsequences That Satisfy the Given Sum Condition LeetCode solution – says that Given an array of integers nums and an integer target. Return the number of non-empty subsequences nums such that the sum of the minimum and maximum element on it is less or equal to target. Since the answer may be too …
Problem Statement: Find the Town Judge LeetCode Solution – In a town, there are n people labeled from 1 to n. There is a rumor that one of these people is secretly the town judge and we need to find the town judge. If the town judge exists, then: The town judge trusts nobody. …
Problem Statement The Insert Delete GetRandom O(1) LeetCode Solution – “Insert Delete GetRandom O(1)” asks you to implement these four functions in O(1) time complexity. insert(val): Insert the val into the randomized set and return true if the element is initially absent in the set. It returns false when the …
Problem Description: The Concatenation of Array Leetcode Solution: states that Given an integer array nums of length n, you want to create an array ans of length 2n where ans[i] == nums[i] and ans[i + n] == nums[i] for 0 <= i < n (0-indexed). Specifically, ans is the concatenation of two nums arrays. Return the array ans. Let’s first try to understand the problem and what it states. The problem …
Problem Statement The Sliding Window Median LeetCode Solution – “Sliding Window Median” states that given an integer array nums and an integer k, where k is the sliding window size. We need to return the median array of each window of size k. Example: Input: [1,3,-1,-3,5,3,6,7], k = 3 Output: [1.00000,-1.00000,-1.00000,3.00000,5.00000,6.00000] Explanation: Median …
Problem Statement The Daily Temperatures Leetcode Solution: states that given an array of integers temperatures represents the daily temperatures, return an array answer such that answer[i] is the number of days you have to wait after the ith day to get a warmer temperature. If there is no future day for which this is possible, keep answer[i] == 0 instead. …
Problem Statement The Bus Routes LeetCode Solution – “Bus Routes” states that you’re given an array of routes where routes[i] is a bus route such that ith bus repeats the route forever. We’ll be given a bus stop source and we want to reach the bus stop target. We can …
Problem Statement The Subarrays with K Different Integers LeetCode Solution – “Subarrays with K Different Integers” states that you’re given an integer array nums and an integer k. We need to find a total number of good subarrays of nums. A good array is defined as an array with exactly …
Problem Statement : Given an integer array of nums sorted in non-decreasing order, remove some duplicates in place such that each unique element appears at most twice. 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 …