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British astronomer Eddington liked to ride a bike. It is said that in order to show off his skill, he has even defined an "Eddington number", E -- tha 阅读全文
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The basic task is simple: given N real numbers, you are supposed to calculate their average. But what makes it complicated is that some of the input n 阅读全文
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Given two sets of integers, the similarity of the sets is defined to be /, where Nc is the number of distinct common numbers shared by the two sets 阅读全文
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Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to ou 阅读全文
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There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One may rent a bike at any s 阅读全文
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在c与c++中，有多种办法可以通过函数交换传入的两数的值，但有容易有一些问题产生，因而本文将几种交换方式及容易出错的点进行了分类。 1.传引用这是c++中最常见方式如下： int swap1 (int &a,int &b) { int c; c=a; a=b; b=c; cout<<"a1:"<<a 阅读全文
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1.先cd切换到工作的目录 2.进入项目文件夹，通过命令git init将项目初始化成git本地仓库 git init 2、将项目内所有文件都添加到暂存区 git add . //用.是当前目录，也可自己选择文件加入 3、对本次的提交进行备注，以便后期版本回退等操作 git commit -m 'x 阅读全文
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在使用getline读入一整行时，若是前面是使用getchar()、cin这类读入了一个字母，但是不会读入后续换行\n符号或者空格的输入时，再接getline()就容易出现问题。 这是因为输入数字之后，敲回车，产生的换行符仍然滞留在输入流了，接着就被getline(cin,s)给读进去了，此时的s= 阅读全文