Given a 0-indexed integer arraynums, find the leftmostmiddleIndex(i.e., the smallest amongst all the possible ones). AmiddleIndexis an index wherenums[0] + nums[1] + ... + nums[middleIndex-1] == nums[middleIndex
Can you solve this real interview question? Find Minimum in Rotated Sorted Array - Suppose an array of length n sorted in ascending order is rotated between 1 and n times. For example, the array nums = [0,1,2,4,5,6,7] might become: * [4,5,6,7,0,1,2] if
Given an array of integersnums, write a method that returns the "pivot" index of this array. We define the pivot index as the index where the sum of the numbers to the left of the index is equal to the sum of the numbers to the right of the index. If no such index exists, we ...
1. 无重复 Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2). Find the minimum element. You may assume no duplicate exists in the array. 思路:这个是找最小,和找指定数字其实差不多的。画个示意图吧 二分...
LeetCode-34. Find First and Last Position of Element in Sorted Array,Givenanarrayofintegersnumssortedinascendingorder,findthestartingandendingpositionofagiventargetvalue.Youralgorithm'sruntimecomplexitymustbeintheorderofO(logn).Ifthe...
题目链接:https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/ 题目: Suppose a sorted array is rotated at some pivot unknown to you beforehand. 0 1 2 4 5 6 7might become4 5 6 7 0 1 2). Find the minimum element. ...
2150. 找出数组中的所有孤独数字 - 给你一个整数数组 nums 。如果数字 x 在数组中仅出现 一次 ,且没有 相邻 数字(即,x + 1 和 x - 1)出现在数组中,则认为数字 x 是 孤独数字 。 返回 nums 中的 所有 孤独数字。你可以按 任何顺序 返回答案。 示例 1: 输入:nums
Iftargetis not found in the array, return[-1, -1]. You must write an algorithm withO(log n)runtime complexity. Example 1: Input: nums = [5,7,7,8,8,10], target = 8 Output: [3,4] Example 2: Input: nums = [5,7,7,8,8,10], target = 6 ...
这就是最基本的二分查找问题,对应于 LeetCode 35. 搜索插入位置:给定一个排序数组和一个目标值,在数组中找到目标值,并返回其索引。如果目标值不存在于数组中,返回它将会被按顺序插入的位置。我们已经分析过,target 按顺序插入的位置,就是满足 x≥ target 的第一个...
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]. ...