题目: 分析:很显然不能用时间复杂度为O(N2)的暴力穷举法,下面先给出一个运行时间为102ms的AC答案: 上面的答案虽然AC了,但若原始海量数据本身是降序排列时,再 ...
Given the arraynums, for eachnums i find out how many numbers in the array are smaller than it. That is, for eachnums i you have to count the number of validj ssuch thatj iandnums j lt nums i . Return ...
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题目: 分析:很显然不能用时间复杂度为O(N2)的暴力穷举法,下面先给出一个运行时间为102ms的AC答案: 上面的答案虽然AC了,但若原始海量数据本身是降序排列时,再 ...
You are given an integer array nums and you have to return a new counts array. The countsarray has the property where counts[i] is the number ...
说来惭愧,已经四个月没有切 leetcode 上的题目了。 虽然工作中很少(几乎)没有用到什么高级算法,数据结构,但是我一直坚信 "任何语言都会过时,只有数据结构和算法才能永恒"。leetcode 上的题目,截止目前切了 137 道(all solutions),只写过 6 篇题解,所以我 ...
题目如下: Given an array nums of integers, return how many of them contain an even number of digits. Example 1: Example 2: Constraints ...
Problem Description: Given an array of n integers nums and a target, find the number of index triplets i, j, k with 0 <= i < j < k < n ...
题目: You are given an integer array nums and you have to return a new counts array. The counts array has the property where counts[i] is the number ...
Compare two version numbers version1 and version1.If version1 > version2 return 1, if version1 < version2 return -1, otherwise return 0. You ...
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...