TypeScript Data Structure: Implementing a Doubly Linked List
用Typescript实现一个双向链表 Design your implementation of the linked list. You can choose to use a singly or doubly linked list. A node in a singly linked list should have two attributes: val and next. val is the value of the current node, and next is a pointer/reference to the next node. If you want to use […]
Typescript Data Structures: Linked List
In the vast expanse of data structures available to developers, the LinkedList holds a unique place. Known for its efficiency in insertion and deletion operations, it’s a staple in algorithm design and application development. This post explores how to implement a LinkedList in TypeScript, bringing together the efficiency of this data structure with the strong […]
448. Find All Numbers Disappeared in an Array
Given an array nums of n integers where nums[i] is in the range [1, n], return an array of all the integers in the range [1, n] that do not appear in nums. Example 1: Input: nums = [4,3,2,7,8,2,3,1] Output: [5,6] Example 2: Input: nums = [1,1] Output: [2] Constraints: n == nums.length 1 <= […]
487. Max Consecutive Ones II
Given a binary array nums, return the maximum number of consecutive 1‘s in the array if you can flip at most one 0. Example 1: Input: nums = [1,0,1,1,0] Output: 4 Explanation: – If we flip the first zero, nums becomes [1,1,1,1,0] and we have 4 consecutive ones. – If we flip the second zero, […]
Check If N and Its Double Exist
Given an array arr of integers, check if there exist two indices i and j such that: i != j 0 <= i, j < arr.length arr[i] == 2 * arr[j] Example 1: Input: arr = [10,2,5,3] Output: true Explanation: For i = 0 and j = 2, arr[i] == 10 == 2 * 5 […]