homework-06-白红宇

homework-06

阅读量：5134 次

发布时间：2019-06-13

本文共 2246 字，大约阅读时间需要 7 分钟。

1. 了解Lambda的用法

计算“Hello World!”中

a.字母‘e’的个数

b. 字母‘l’的个数

nclude 
      
       #include 
       
        #include 
        
         using namespace std;int main() {    char *buf = "Hello World!";   // Create a vector object that contains 10 elements.   vector
         
           v;   for (int i = 0; i < strlen(buf); ++i) {      v.push_back(buf[i]);   }   // Count the number of even numbers in the vector by    // using the for_each function and a lambda.   int eCount = 0;   int lCount =0 ;   for_each(v.begin(), v.end(), [&eCount,&lCount] (char ch) {      if (ch == 'e') {          eCount++;      }      else if (ch == 'l') {          lCount++;      }   });   // Print the count of even numbers to the console.   cout << "There are " << eCount         << " e in the vector." << endl;   cout << "There are " << lCount         << " l in the vector." << endl;   system("pause");}

2. 练习使用智能指针

打印“Hello World!”循环右移n位的结果

Example:

n = 1, output = “!Hello World”

n = 3, output = “ld!Hello Wor”

#include
      
       #include
       
        #include
        
         using namespace::std;int main(){    int n;    char str[]="Hello world!";    //insert n.    cin>>n;    char *p = str + strlen(str) - n;    cout<

3.围棋游戏

1、playPrev

　　返回则先要将本棋子移除，返回到上一个棋子的内容，并且判断当前子去掉之前是否有使对方子被吃掉的现象，如果有，获取数据并恢复，最后遍历棋盘更新。

public void playPrev(GoMove gm)        {            int i = gm.Point.X;            int j = gm.Point.Y;            Grid[i,j].removeStone();            m_gmLastMove = gameTree.peekPrev();            if (m_gmLastMove != null)                Grid[m_gmLastMove.Point.X,m_gmLastMove.Point.Y].setUpdated();            if (gm.DeadGroup != null)            {                System.Collections.IEnumerator myEnumerator = gm.DeadGroup.GetEnumerator();                while (myEnumerator.MoveNext())                {                    Point p;                        p = (Point)myEnumerator.Current;                    Grid[p.X,p.Y].setNoKilled();                    Grid[p.X,p.Y].setStone(nextTurn(gm.Color));                }            }            optRepaint();            return;         }