Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn‘t one, return -1 instead.
Have you met this question in a real interview?
Example
Given the array [2,3,1,2,4,3]
and s = 7
, the subarray [4,3]
has the minimal length under the problem constraint.
If you have figured out the O(n) solution, try coding another solution of which the time complexity is O(n log n).
时间: 2024-11-08 04:23:09