Given an array of integers and an integer k, find out whether there there are two distinct indices i and j in the array such that nums[i] = nums[j] and the difference between i and j is at most k. 直接使用循环时间复杂度为O(N*k),使用stl中的基于红黑树实现的map能降低循环的时间,在O(logN…
Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the absolute difference between i and j is at most k. Example 1: Input: nums = [1,2,3,1], k = 3 Output:…
219. Contains Duplicate II Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the absolute difference between i and j is at most k. 题目地址:https://leetcode.c…
public class Solution { Dictionary<int, List<int>> dic = new Dictionary<int, List<int>>(); public bool ContainsNearbyDuplicate(int[] nums, int k) { ; i < nums.Length; i++) { var cur = nums[i]; if (!dic.ContainsKey(nums[i])) { va…
