Leetcode力扣刷题、C++编程实录、算法和数据结构从入门到深度接下来播放 自动连播 35. 搜索插入位置 Search Insert Position 力扣 LeetCode 题解 程序员写代码 3 0 3101. 交替子数组计数 Count Alternating Subarrays 力扣 LeetCode 题解 程序员写代码 25 0 【全200集】强推!2024最强数据结构与算法全套教程,...
Leecode 第34题,找到元素在数组中出现的第一个和最后一个位置。原题链接 https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/ Leetcode系列github repo: https://github.com/willyii/LeetcodeRecord 知识分享官
- LeetCodeleetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/ 解题思路 1. 二分找元素,双指针找区间 class Solution { public: vector<int> searchRange(vector<int>& nums, int target) { vector<int> res(2, -1); int pos = bsearch(nums, target, 0, nums....
解法三: classSolution {public: vector<int> searchRange(vector<int>& nums,inttarget) {intstart =firstGreaterEqual(nums, target);if(start == nums.size() || nums[start] != target)return{-1, -1};return{start, firstGreaterEqual(nums, target +1) -1}; }intfirstGreaterEqual(vector<int>&...
LeetCode刷题系列—34. Find First and Last Position of Element in Sorted Array 1.题目描述 英文版: Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value. Your algorithm's runtime complexity must be in the order of O(log ...
Output: [-1,-1] 也是一道典型的二分法题目,思路是通过二分法思想分别找到第一个插入的位置和第二个插入的位置。 时间O(log n) 空间O(1) /** * @param {number[]} nums * @param {number} target * @return {number[]} */ var searchRange = function(nums, target) { ...
思路2 时间复制度O(logn) 对于排序问题优先考虑到二分查找. intrangeSearch(vector<int>&nums,intl,intr,inttarget,boolisLeftSearch){intmid;while(l<=r){mid=(l+r)/2;inttmp=nums[mid];if(tmp==target){if(isLeftSearch){r=mid-1;}else{l=mid+1;}}else{if(isLeftSearch){l=mid+1;}else{r=...
方法: 先二分找起点,再二分找终点,算法复杂度即为O(log n),主要需要注意二分终止条件。 packagecom.eric.leetcodeclassFindFirstAndLastPositionOfElementInSortedArray{funsearchRange(nums:IntArray,target:Int):IntArray{varresultStartIndex=-1varresultEndIndex=-1varstartIndex=0varendIndex=nums.lastIndexvarmi...
LeetCode-Find First and Last Position of Element in Sorted Array,LeetCodeJavaC++FindFirstandLastPositionofElementinSortedArray
Leetcode 34. Find First and Last Position of Element in Sorted Array sarahyang 1 人赞同了该文章 1. Problem Descriptions: Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value. If target is not found in the array, ...