꿈꾸는공학도

https://leetcode.com/problems/median-of-two-sorted-arrays/description/Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays.The overall run time complexity should be O(log (m+n)). Example 1:Input: nums1 = [1,3], nums2 = [2]Output: 2.00000Explanation: merged array = [1,2,3] and median is 2.Example 2:Input: nums1 = [1,2], nums2 = [3,4]Outp..

https://leetcode.com/problems/minimum-index-sum-of-two-lists/description/Given two arrays of strings list1 and list2, find the common strings with the least index sum.A common string is a string that appeared in both list1 and list2.A common string with the least index sum is a common string such that if it appeared at list1[i] and list2[j] then i + j should be the minimum value among all the ot..

https://leetcode.com/problems/kth-largest-element-in-a-stream/description/?envType=daily-question&envId=2024-08-12Design a class to find the kth largest element in a stream. Note that it is the kth largest element in the sorted order, not the kth distinct element.Implement KthLargest class:KthLargest(int k, int[] nums) Initializes the object with the integer k and the stream of integers nums.int..

https://leetcode.com/problems/remove-nth-node-from-end-of-list/description/Given the head of a linked list, remove the nth node from the end of the list and return its head. Example 1:Input: head = [1,2,3,4,5], n = 2Output: [1,2,3,5]Example 2:Input: head = [1], n = 1Output: []Example 3:Input: head = [1,2], n = 1Output: [1] Constraints:The number of nodes in the list is sz.1 0 1 Follow up: Could ..

https://leetcode.com/problems/search-in-rotated-sorted-array/description/There is an integer array nums sorted in ascending order (with distinct values).Prior to being passed to your function, nums is possibly rotated at an unknown pivot index k (1  [nums[k], nums[k+1], ..., nums[n-1], nums[0], nums[1], ..., nums[k-1]] (0-indexed). For example, [0,1,2,4,5,6,7] might be rotated at pivot index 3 a..

https://leetcode.com/problems/spiral-matrix-iii/description/?envType=daily-question&envId=2024-08-08You start at the cell (rStart, cStart) of an rows x cols grid facing east. The northwest corner is at the first row and column in the grid, and the southeast corner is at the last row and column.You will walk in a clockwise spiral shape to visit every position in this grid. Whenever you move outsi..

https://leetcode.com/problems/plus-one/description/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. The large integer does not contain any leading 0's.Increment the large integer by one and return the resulting array of digits. Examp..

https://leetcode.com/problems/linked-list-cycle-ii/description/Given the head of a linked list, return the node where the cycle begins. If there is no cycle, return null.There is a cycle in a linked list if there is some node in the list that can be reached again by continuously following the next pointer. Internally, pos is used to denote the index of the node that tail's next pointer is connec..

https://leetcode.com/problems/remove-linked-list-elements/description/Given the head of a linked list and an integer val, remove all the nodes of the linked list that has Node.val == val, and return the new head. Example 1:Input: head = [1,2,6,3,4,5,6], val = 6Output: [1,2,3,4,5]Example 2:Input: head = [], val = 1Output: []Example 3:Input: head = [7,7,7,7], val = 7Output: [] Constraints:The numb..

https://leetcode.com/problems/minimum-number-of-pushes-to-type-word-ii/description/?envType=daily-question&envId=2024-08-06 You are given a string word containing lowercase English letters.Telephone keypads have keys mapped with distinct collections of lowercase English letters, which can be used to form words by pushing them. For example, the key 2 is mapped with ["a","b","c"], we need to push ..