scrollView.subviews.map { (var view) -> () in if (view is UIButton) { view.removeFromSuperview() } }…

Swift中Array的删除对象 在Swift中数组Array没有removeObject的方法 1.找到下标 let model_index = selectedArray.index(where: { (arr) -> Bool in ((selectedBeaconArray.index(of: vbModel)) != nil) }) 2.删除下标对应的元素 if model_index != nil{ selectedBeaconArray.remove(at: model_index…

Given a linked list, remove the n-th node from the end of list and return its head. Example: Given linked list: 1->2->3->4->5, and n = 2. After removing the second node from the end, the linked list becomes 1->2->3->5. Note: Given n w…

Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.…

Given a sorted array nums, remove the duplicates in-place such that duplicates appeared at most twiceand return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memo…

Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Example 1: Input: 1->2->3->3->4->4->5 Output: 1->2->5 Example 2: Input: 1->1->1->2->3 Outpu…

Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Input: 1->1->2 Output: 1->2 Example 2: Input: 1->1->2->3->3 Output: 1->2->3 给定一个排序链表,删除所有重复的元素,使得每个元素只出现一次. 示例 1: 输入: 1->1-…

Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may contain letters other than the parentheses ( and ). Example 1: Input: "()())()" Output: ["()()…

Given a root node reference of a BST and a key, delete the node with the given key in the BST. Return the root node reference (possibly updated) of the BST. Basically, the deletion can be divided into two stages: Search for a node to remove. If the n…

Given a C++ program, remove comments from it. The program source is an array where source[i] is the i-th line of the source code. This represents the result of splitting the original source code string by the newline character \n. In C++, there are t…