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每日算法之二十九:Search in Rotated Sorted Array
在一个经过旋转后的有序数组中查找一个目标元素。 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...
分类:其他好文   时间:2014-06-20 13:06:31    阅读次数:261
leetcode--Search in Rotated Sorted Array
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 t...
分类:其他好文   时间:2014-06-08 02:05:43    阅读次数:311
Search in Rotated Sorted Array II
Follow up for "Search in Rotated Sorted Array":What ifduplicatesare allowed?Would this affect the run-time complexity? How and why?Write a function to...
分类:其他好文   时间:2014-06-04 20:17:05    阅读次数:249
LeetCode: Search in Rotated Sorted Array II [081]
【题目】 Follow up for "Search in Rotated Sorted Array": What if duplicates are allowed? Would this affect the run-time complexity? How and why? Write a function to determine if a given target is in the array. 【题意】 在“Search in Rotated Sorted Array”的基...
分类:其他好文   时间:2014-06-03 01:55:38    阅读次数:173
Search in Rotated Sorted Array I II
Search in Rotated Sorted Array I II
分类:其他好文   时间:2014-05-26 00:59:47    阅读次数:197
LeetCode: Search in Rotated Sorted Array [032]
【题目】 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. You may assume no du...
分类:其他好文   时间:2014-05-22 10:43:12    阅读次数:310
Leetcode | Search in Rotated Sorted Array I & II
Search in Rotated Sorted Array ISuppose 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 ...
分类:其他好文   时间:2014-05-19 12:30:00    阅读次数:388
LeetCode Search in Rotated Sorted Array II
class Solution {public: bool search(int A[], int n, int target) { if (n A[mid]) { right = mid; sep = A[mid]; ...
分类:其他好文   时间:2014-05-15 09:29:52    阅读次数:177
leetcode第一刷_Search in Rotated Sorted Array
旋转数组的查找问题。从头开始扫一遍,O(N)的复杂度,一般也能过,甚至先排序以下,再二分都能过。不过这道题的目的当然不在于此。 想一下旋转之后对我们的查找产生了什么影响。如果没旋转过,我们直接比较target与A[middle]的大小,然后总能非常确定的丢掉源数组的一半,即把搜索空间减半,但是旋转之后,只根据A[middle]是确定不了下一轮的走向的,因为即使A[middle]比target大,...
分类:其他好文   时间:2014-05-12 15:25:32    阅读次数:231
leetcode第一刷_Search in Rotated Sorted Array II
接着上一篇,同样是旋转数组中查找问题。如果这个数组有重复元素怎么办呢?会有什么影响? 我举一个极端的例子,假设数组中的元素是这样的,1,1,2,1,1,1,1,我们要在这个数组中查找2,一开始的A[middle]=1,发现比target小,那我们就看看A[0]和A[N],发现都跟A[middle]相等,那么这个2到底在哪一半中?只有上帝知道,如果他老人家真的存在的话。这种时候我们怎么办呢?没有其...
分类:其他好文   时间:2014-05-12 14:45:35    阅读次数:278
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