【leetcode】1187. Make Array Strictly Increasing 题目如下: Given two integer arraysarr1andarr2, return the minimum number of operations (possibly zero) needed to makearr1strictly increasing. In one operation, you can choose two indices0 <= i < arr1.lengthand0 <= j < arr2.lengthand do ...
Intuition For any operation, we need to pick the smallest possible element from the second array. So, we can start by sorting the second array. Solution Run the search with two branches: Keep the current element (if increasing), add an operation. Return the minimum of these branches. For ...
leetcode 1187. Make Array Strictly Increasing [DP] description和最长递增子序列(LIS)思路很像。 对于位置 i ,其取值要满足单调递增的约束,最多有两种情况:arr1[i] 来自arr2 当位于i+1时,首先查看位置 i 的所有可能取值x,若arr1[i+1]大于x,则arr[i+1]满足单调递增且不会产生操作;若arr1[i+1]<=...
leetcode.array--27. Remove Element 问题:27. Remove Element 问题描述:https://leetcode.com/problems/remove-element/description/ 从序列中移除指定元素,返回新序列的长度。 Python: 好像要比O(n)遍历还要快一点,应该是Python做过优化??...LeetCode Medium Swaps To Make Sequences Increasing We have ...
链接:https://leetcode-cn.com/problems/remove-one-element-to-make-the-array-strictly-increasing这道题官方给的 tag 是简单题但是一点都不简单。题意是给一个数组,如果最多删除数组中的一个数字就能使得数组整体是单调递增的话,返回 true,否则返回 false。这道题我一开始做的时候切入点就不对,我想的一直是...
An arraynumsis strictly increasing ifnums[i] < nums[i+1]for all0 <= i < nums.length - 1. An array of length1is trivially strictly increasing. Example 1: Input: nums = [1,1,1]Output: 3Explanation: You can do the following operations: 1) Increment nums[2], so nums becomes [1,...
27 changes: 15 additions & 12 deletions 27 ...-Strictly-Increasing/1909.Remove-One-Element-to-Make-the-Array-Strictly-Increasing_v2.cpp Original file line numberDiff line numberDiff line change @@ -2,19 +2,22 @@ class Solution {
如果做过O(n)的非降子序列,再把这道题转换过去,就会比较简单。 需要注意的是,到底是不是strictly increase 300题是要求strictly increase...
1909. 删除一个元素使数组严格递增 - 给你一个下标从 0 开始的整数数组 nums ,如果 恰好 删除 一个 元素后,数组 严格递增 ,那么请你返回 true ,否则返回 false 。如果数组本身已经是严格递增的,请你也返回 true 。 数组 nums 是 严格递增 的定义为:对于任意下标的 1
1classSolution {2func makeArrayIncreasing(_ arr1: [Int], _ arr2: [Int]) ->Int {3let n1 =arr1.count4let s2 = Set<Int>(arr2)5vara3 =Array(s2)6a3 =a3.sorted()7let n3 =a3.count89vardp = [[Int]](repeating: [Int](repeating: Int.max/2, count: n3), count: n1)10vardp1 ...