Given an integer array, you need to find one continuous subarray that if you only sort this subarray in ascending order, then the whole array will be sorted in ascending order, too.
You need to find the shortest such subarray and output its length.
Example 1:
Input: [2, 6, 4, 8, 10, 9, 15]
Output: 5
Explanation: You need to sort [6, 4, 8, 10, 9] in ascending order to make the whole array sorted in ascending order.
Note:
Then length of the input array is in range [1, 10,000].
The input array may contain duplicates, so ascending order here means <=.
|
1 2 3 4 5 6 7 8 9 10 11 |
func findUnsortedSubarray(_ nums: [Int]) -> Int { if nums.count < 2 { return 0 } let sn = nums.sorted() var p = -1, q = -1 for (i, v) in zip(sn, nums).enumerated() { if v.0 != v.1 { p == -1 ? (p = i) : (q = i + 1) } } return q - p } |
❤ 点击这里 -> 订阅《PAT | 蓝桥 | LeetCode学习路径 & 刷题经验》by 柳婼
❤ 点击这里 -> 订阅《从放弃C语言到使用C++刷算法的简明教程》by 柳婼
❤ 点击这里 -> 订阅PAT甲级乙级、蓝桥杯、GPLT天梯赛、LeetCode题解离线版
