Create 字符串操作_AC.cpp

3.C++程序设计/week7/编程练习/字符串操作_AC.cpp

@@ -0,0 +1,196 @@
+#include <iostream>
+#include <cctype>
+#include <cstdlib>
+#include <cstring>
+#include <string>
+#include <sstream>  // Required for stringstreams
+using namespace std;
+
+string str[21];
+int NumOfStr = 0;
+
+int StringToInteger(string NumberAsString)
+{
+	int NumberAsInteger=0;
+	for (int i = 0; i < NumberAsString.size(); i++)
+		NumberAsInteger = NumberAsInteger * 10 + (NumberAsString[i] - '0');
+
+	return NumberAsInteger;
+}
+
+string NumToString ( int number )
+{
+	std::ostringstream oss;
+
+	// Works just like cout
+	oss<< number;
+
+	// Return the underlying string
+	return oss.str();
+}
+
+
+bool isNum(string s)
+{
+	for (int i = 0; i < s.length(); i++)
+	{
+		if (!isdigit(s[i]))
+		{
+			return false;
+		}
+	}
+	return true;
+}
+
+int find()
+{
+	char s;
+	int n;
+	cin >> s >> n;
+	return str[n].find(s);
+}
+
+int rfind()
+{
+	char s;
+	int n;
+	cin >> s >> n;
+	return str[n].rfind(s);
+}
+
+int get_int()
+{
+	string str;
+	cin >> str;
+	if (isNum(str))
+	{
+		//return stoi(str);
+		return StringToInteger(str);
+	}
+	else
+	{
+		if (str == "find")
+		{
+			return find();
+		}
+		else if (str == "rfind")
+		{
+			return rfind();
+		}
+	}
+	return 0;
+}
+
+
+
+string copy()
+{
+	int n, x, l;
+	n = get_int();
+	x = get_int();
+	l = get_int();
+	return str[n].substr(x, l);
+}
+
+string add();
+
+string get_str()
+{
+	string str;
+	cin >> str;
+	if (str == "copy")
+	{
+		return copy();
+	}
+	else if (str == "add")
+	{
+		return add();
+	}
+	else
+	{
+		return str;
+	}
+}
+
+string add()
+{
+	string s1 = get_str();
+	string s2 = get_str();
+	//if (isNum(s1) && isNum(s2) && stoi(s1) >= 0 && stoi(s1) <= 99999 && stoi(s2) >= 0 && stoi(s2) <= 99999)
+	if (isNum(s1) && isNum(s2) && StringToInteger(s1) >= 0 && StringToInteger(s1) <= 99999 && StringToInteger(s2) >= 0 && StringToInteger(s2) <= 99999)
+	{
+		//return to_string(stoi(s1) + stoi(s2));
+		return NumToString(StringToInteger(s1) + StringToInteger(s2));
+	}
+	else
+	{
+		return s1 + s2;
+	}
+}
+
+
+
+void insert()
+{
+	string s = get_str();
+	int n = get_int();
+	int x = get_int();
+	str[n].insert(x, s);
+}
+
+void reset()
+{
+	string s = get_str();
+	int n = get_int();
+	str[n] = s;
+}
+
+void print()
+{
+	int n = get_int();
+	cout << str[n] << endl;
+}
+
+void printall()
+{
+	for (int i = 1; i <= NumOfStr; i++)
+	{
+		cout << str[i] << endl;
+	}
+}
+
+int main()
+{
+	cin >> NumOfStr;
+	for (int i = 1; i <= NumOfStr; i++)
+	{
+		cin >> str[i];
+	}
+	while (true)
+	{
+		string operation;
+		cin >> operation;
+		if (operation == "insert")
+		{
+			insert();
+		}
+		else if (operation == "reset")
+		{
+			reset();
+		}
+		else if (operation == "print")
+		{
+			print();
+		}
+		else if (operation == "printall")
+		{
+			printall();
+		}
+		else if (operation == "over")
+		{
+			break;
+		}
+	}
+	return 0;
+
+}