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
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. You may assume no duplicate exists in the array. 思...
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...
Find the minimum element. You may assume no duplicate exists in the array. 这个很简单,因为没有重复数字,数组本质上还是有序的,用类似二分查找的方法复杂度O(log n)。记得考虑一下整个数组没有 rotated 的情况。 20号又加了有重复数字的题II,直接附II的 code 吧,II中需要考虑前中后三个数相等的情况...
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 ...
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
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]. ...