跳转到内容

153. Find Minimum in Rotated Sorted Array 寻找旋转排序数组中的最小值

【LeetCode】153. Find Minimum in Rotated Sorted Array 解题报告(Python)

Section titled “【LeetCode】153. Find Minimum in Rotated Sorted Array 解题报告(Python)”

标签: LeetCode


题目地址:https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/description/

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).

Find the minimum element.

You may assume no duplicate exists in the array.

找出旋转有序数组中的最小值。

这个题是剑指offer上的原题,这里在复习一下。看到有序的数组就想到二分查找。这个是变种而已。

注意边界和循环条件。

这里写图片描述

class Solution(object):
def findMin(self, nums):
"""
:type nums: List[int]
:rtype: int
"""
if len(nums) == 1: return nums[0]
left, right = 0, len(nums) - 1
mid = left
while nums[left] >= nums[right]:
if left + 1 == right:
mid = right
break
mid = (left + right) / 2
if nums[mid] >= nums[left]:
left = mid
elif nums[mid] <= nums[right]:
right = mid
return nums[mid]

2018 年 3 月 12 日

最近更新:

评论与交流