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 iand j is at most k. 方法1:暴力解法 代码如下: public class Solution { public boolean…

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:…

每天一算:Contains Duplicate II 描述 给出1个整形数组nums和1个整数k,是否存在索引i和j,使得nums[i] == nums[j] 且i和j之间的差不超过k Example 1: Input: nums = [1,2,3,1], k = 3 Output: true. Example 2: Input: nums = [1,0,1,1], k = 1 Output: true Example 3: Input: nums = [1,2,3,1,2,3], k = 2…

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. 题目标签:Array, Hash Table 题目给了我们一个nums array 和一个 k, 让…

Problem: 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 difference between i and j is at most k. Summary: 给出数组nums,整型数k,找到数组中是否存在nums[i]和nums[j]相等且…

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. 解题思路: HashMap,JAVA实现如下: public boolean containsNearby…

找出是否存在nums[i]==nums[j],使得 j - i <=k 这是map的一个应用 class Solution { public: bool containsNearbyDuplicate(vector<int>& nums, int k) { map<int,int> mii; ;i<nums.size() ;++i) { if (mii.find(nums[i]) != mii.end()) { if(i - mii[nums[i]] <=…

题目描述: 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 difference between i and j is at most k. 解题思路: HashMap解决. 代码如下: public class Solution { public…

该题用到了.NET 3.5在System.Collections.Generic命名空间中包含一个新的集合类:HashSet<T>的Add()方法,详细信息请看转载:C# HashSet 用法. 题目: 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 t…

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 difference between i and j is at most k. 问题:给定一个数组和整数 k ,判断是否存在两个相等元素,并且两个相等元素的下标差在 k 以内? 问题问是否存在一个子…