11.一个游戏,前20关是每一关自身的分数,1-30关每一关是10分,31-40关,每一关是20分,1-49关,每一关是30分,第50关是100分,输入你现在闯到的关卡数,求你现在拥有的分数.利用if嵌套for. Console.Write("输入你闯的关卡数:"); int a = int.Parse(Console.ReadLine()); sum = 0; if(a<=20) { for (int i = 1; i <=a;i++ ) { sum += i; } }…
11.二进制中1的个数 输入一个整数,输出该数二进制表示中1的个数.其中负数用补码表示. (1)最优解 public class Solution { public int NumberOf1(int n) { int count=0; while(n!=0){ n = n&(n-1); count++; } return count; } } (2) public class Solution { public int NumberOf1(int n) { int count=0; int f…
2017/11/14 Leetcode 日记 442. Find All Duplicates in an Array Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twice in this array. Could you do it withou…
在nutch中,默认情况下尊重robot.txt的配置,同时不提供配置项以忽略robot.txt. 以下是其中一个解释.即作为apache的一个开源项目,必须遵循某些规定,同时由于开放了源代码,可以简单的通过修改源代码来忽略robot.txt的限制. From the point of view of research and crawling certain pieces of the web, and i strongly agree with you that it should be c…
