LeetCode: 220. Contains Duplicate III

题目描述

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: nums = [1,2,3,1], k = 3, t = 0
Output: true

Example 2:

Input: nums = [1,0,1,1], k = 1, t = 2
Output: true

Example 3:

Input: nums = [1,5,9,1,5,9], k = 2, t = 3
Output: false

解题思路

根据题意，模拟实现。

AC 代码

class Solution {
public:
    bool containsNearbyAlmostDuplicate(vector<int>& nums, int k, int t) {
        for(int i = 0; i < nums.size(); ++i)
        {
            for(int j = i + 1; j < nums.size() && j <= i + k; ++j)
            {
                if(abs((long long)nums[j] - (long long)nums[i]) <= t)
                {
                    return true;
                }
            }
        }
        
        return false;
    }
};