Leetcode 34. Find First and Last Position of Element in Sorted Array 在一个有序数组中找到第一个和最后一个元素,程序员大本营,技术文章内容聚合第一站。
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 ...
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, return [-1…
first,last=mid,midwhilel <=first: fm= (first+l) // 2ifnums[fm] <target: l= fm + 1else: first= fm -1whiler >=last: rm= (last+r) // 2ifnums[rm] >target: r= rm - 1else: last= rm + 1return[first+1,last-1]return[-1,-1]...
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 n). If the target is not found in the array, return [-1, -1]. Example 1: 代码语言:javascript...
=target){// 找到第一个与 target 相等的元素returnmid}high=mid-1}}return-1}// 二分查找最后一个与 target 相等的元素,时间复杂度 O(logn)funcsearchLastEqualElement(nums[]int,targetint)int{low,high:=0,len(nums)-1forlow<=high{mid:=low+((high-low)>>1)ifnums[mid]>target{high=mid-1}...
- 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.size...
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 Train of thought Using binary search, if find target, contiguous loop from found position to left or right. classSolution{publicint[]searchRange(int[]nums,inttarget){inttIndex=Arrays.binarySearch(nums,0,nums.length,target...
Memory Usage: 30.5 MB, less than 28.29% of Java online submissions for Find First and Last Position of Element in Sorted Array. class Solution { public int[] searchRange(int[] nums, int target) { int[] result = new int[2];