这里的重点是你可以在"if语句"内部再放一个“if语句”，这是一个很强大的功能，可以用来创建嵌套(nested)的决定，其中的一个分支将引向另一个分支的子分支...

题目描述：Given an array of integers nums, write a method that returns the "pivot" index of this array.We define the pivot index as the index where the sum of the ...

假设对0~10^6-1的1000个整数进行排序，使用基数排序r=10^6的排序方法相当于直接对数使用箱子排序。对箱子的初始化需要10^6个执行步，节点分配需要1000个执行步，收集箱子节点需要10^6个执行步，总的执行步数为2001000。 使用...

题目描述：In a given integer array nums, there is always exactly one largest element.Find whether the largest element in the array is at least twice as much as eve...

题目描述：Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation.(R...

以太通道-Etherchannel-配置以太通道实现端口捆绑增加带宽和可靠性。以太通道的作用：-多条线路负载均衡，提高带宽；-容错，当一条线路失效时，其余线路通信，不会丢包配置以太通道的原则：-配置捆绑了的端口必须属于同一个vlan，如...

B. Code For 1time limit per test:2 secondsmemory limit per test:256 megabytesinput:standard inputoutput:standard outputJon fought bravely to rescue the wil...

13. Roman to IntegerTotal Accepted: 95998Total Submissions: 234087Difficulty: EasyGiven a roman numeral, convert it to an integer. Input is guaranteed to be...

Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 和12正好相反，理解转换规则，打一个表就行了class Solution {public: ...

Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999.模拟题，主要是搞清楚罗马数字的写法和规则，然后打个表就可以了。class Solution {p......