题目地址:https://leetcode-cn.com/problems/search-in-a-sorted-array-of-unknown-size/题目描述Given an integer array sorted in ascending order, write a function to search target in nums. If target exists, then return its index, otherwise return -1. However, the array size is unknown to you...
). Find the first index of a target number. Your algorithm should be in O(log k), where k is the first index of the target number. Return -1, if the number doesn't exist in the array.Notice: If you accessed an inaccessible index (outside of the array), ArrayReader.get will retu...
searchBigSortedArray(ArrayReader * reader, int target) { int l = 0, r = 1, mid; while (reader->get(r) < target) // 越界返回INT_MAX, 必然大于target, 所以没有关系 r <<= 1; while (l < r) { mid = (l + r) >> 1;
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). You are given a target value to search. If found in the array return its index, otherwise return -1. You may assume no duplicate exists in the array...
Search in Rotated Sorted Array I && II Leetcode 对有序数组进行二分查找(下面仅以非递减数组为例): 1. int binarySort(int A[], int lo, int hi, int target) 2. { 3. while(lo <= hi) 4. { 5. int mid = lo + (hi - lo)/2; ...
Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). You are given a target value to search. If found in the array return its index, otherwise return -1. ...
Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).You are given a target value to search. If found in the array return its index, otherwise return -1.You may assume no duplicate ...
https://leetcode.com/problems/search-in-rotated-sorted-array-ii/ 这两道题都是属于循环有序数组的查找问题,无论是查找具体元素的下标还是检查一个目标值是否在数组中,主要的判断逻辑都是一致的。 思路 这种将有序数组翻转成循环有序数组的解决办法是将原数组分段。用首元素start、中间元素mid、尾元素end,可以...
33. Search in Rotated Sorted Array 假设按照升序排序的数组在预先未知的某个点上进行了旋转。 ( 例如,数组 [0,1,2,4,5,6,7] 可能变为 [4,5,6,7,0,1,2] )。 搜索一个给定的目标值,如果数组中存在这个目标值,则返回它的索引,否则返回 -1 。
题目地址:Search in Rotated Sorted Array 描述: Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., [0,1,2,4,5,6,7] might become [4,5,6,7,0,1,2]). You are given a target value to search. If found in the array return its ...