http://blog.csdn.net/jeasn168...

题目

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.

算法

不熟悉的TreeSet

public boolean containsNearbyAlmostDuplicate(int[] nums, int k, int t) {if (nums == null || nums.length == 0 || k <= 0) {return false;}final TreeSet<Integer> values = new TreeSet<>();for (int ind = 0; ind < nums.length; ind++) {final Integer floor = values.floor(nums[ind] + t);final Integer ceil = values.ceiling(nums[ind] - t);if ((floor != null && floor >= nums[ind])|| (ceil != null && ceil <= nums[ind])) {return true;}values.add(nums[ind]);if (ind >= k) {values.remove(nums[ind - k]);}}return false;}

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LeetCode 220_Contains Duplicate III

题目

算法

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