要求 给出整型数组nums和整数k,是否存在索引i和j 使得nums[i]和nums[j]之差不超过t,且i和j之差不超过k 思路 建立k个元素的有序查找表 每次有新元素加入,寻找查找表中大于 nums[i]-t 的最小值,若存在且此值小于 nums[i]+t,则目标元素存在 set底层是二叉树实现,时间(nlogn),空间(k) vector中的int值相加可能产生整型溢出,set中使用64位整数 long long 实现 1 class Solution { 2 public: 3 bool…

题目: Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at most t and the difference between i and j is at most k. 链接: http://leetcode.com/problems/c…

［抄题］: Given an array of integers, find out whether there are two distinct indices i and j in the array such that the absolute difference between nums[i] and nums[j] is at most t and the absolute difference between i and j is at most k. Example 1: Inp…

因为要考虑超时问题,所以虽然简单的for循环也可以做,但是要用map等内部红黑树实现的容器. Given an array of integers, find out whether there are two distinct indices i and j in the array such that the absolute difference between nums[i] and nums[j] is at most t and the absolute difference bet…

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the absolute difference between nums[i] and nums[j] is at most t and the absolute difference between i and j is at most k. Example 1: Input: nu…

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the absolute difference between nums[i] and nums[j] is at most t and the absolute difference between i and j is at most k. Example 1: Input: nu…

要求 给出整型数组nums和整数k,是否存在索引i和j,nums[i]==nums[j],且i和j之间的差不超过k 思路 暴力解法(n2) 建立最长为k+1的滑动窗口,用set查找窗口中是否有重复元素,若没有则向后滑动(时间n,空间k) 并不存在滑动窗口的实体,通过维护set中的元素实现 代入具体例子确定边界 1 class Solution { 2 public: 3 bool containsNearbyDuplicate(vector<int>& nums, int k) { 4…

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at most t and the difference between i and j is at most k. 解题思路: 暴力枚举会LTE,解题思路是用sortedSet来解决,sort…

Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at most t and the difference between i and j is at most k. 思想借鉴:维持一个长度为k的window, 每次检查新的值是否与原来窗口中的…

题目: Given an array of integers, find out whether there are two distinct indices i and j in the array such that the difference between nums[i] and nums[j] is at most t and the difference between i and j is at most k. 提示: 看到题目之后,马上想到了题目应该是要利用一个长度为k的划窗,…