题目地址:https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/description/ 题目描述 Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value. Your ...
This article mainly introduces how to find the position of an element in a list using Python, which is of great reference value and hopefully helpful to everyone. How to Find the Position of an Element in a List Problem Description Given a sequence containing n integers, determine the position...
输入:nums = [1,5,8,9] target = 7 输出:[-1,-1] 解决思路:二分查找直到找到第一个目标值,再对目标值左右进行二分查找 Python代码: classSolution(object):defsearchRange(self, nums, target):""":type nums: List[int] :type target: int :rtype: List[int]"""l=0 r= len(nums)-1whilel...
mid= (first + last) // 2 #找到了,分别继续向前,向后查找,直到找到第一个和最后一个targetiftarget ==nums[mid]: low=mid high=midwhilelow >= 0andnums[low] ==target: low-= 1whilehigh <= len(nums) - 1andnums[high] ==target: ...
[LeetCode] 34. Find First and Last Position of Element in Sorted Array 2019-11-04 12:18 −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 ... ...
python def insert_element(lst, index, element): # 检查索引有效性 if index < 0 or index > len(lst): raise IndexError("Index out of range") # 执行插入操作 lst.insert(index, element) # 验证插入结果(打印列表) print(f"After insertion, the list is: {lst}") # 示例用法 my_list...
[LeetCode] 34. Find First and Last Position of Element in Sorted Array 2019-11-04 12:18 −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 i... ...
Updated Apr 8, 2025 Python niklasramo / mezr Sponsor Star 157 Code Issues Pull requests A lightweight JavaScript library for measuring and comparing the dimensions and distances of DOM elements. dimensions offset intesection overlap overflow position element-position element-dimensions Updated Nov...
end]return[-1,-1]###Runtime:88ms,fasterthan69.71%ofPython3onlinesubmissionsforFindFirstandLastPositionofElementinSortedArray.MemoryUsage:15.3MB,lessthan6.50%ofFirstandLastofinSortedArray. 一个大坑就是寻找第一个目标值时,left = (left+start+1)//2 ,如果不加1,由于向下取整的缘故,会导致某些情况发生...
If the target is found, it continues searching in the right half (left = mid + 1), otherwise, it searches in the left half (right = mid - 1). The loop exits when left > right, and right will point to the last occurrence of the target or the last element smaller than the target...