华为机试：输入法查找

小鱼儿 2022-08-09 05:18 208阅读 0赞

![20151012101743233][]

#include <iostream>
    #include <map>
    #include <vector>
    #include <string>
    #include <algorithm>
    
    using namespace std;
    
    /* 把输入的每一行的编码解析为拼音和汉字 */
    void parse_raw(string &str, string &hanzi, string &pinyin)
    {
    	const char *p = str.c_str();
    	const char *q = p;
    
    	while (*q != '_')
    		q++;
    
    	// note [) 范围是前开后闭
    	string _hanzi(p, q);
    	string _pinyin(q + 1, p + str.size());
    
    	hanzi = _hanzi;
    	pinyin = _pinyin;
    }
    
    /* 把输入的拼音解析为拼音和数字 */
    void parse_input(string &str, string &pinyin, int &nums)
    {
    	const char *p = str.c_str();
    	const char *q = p;
    
    	while (*q != '\0' && !('0' <= *q && *q <= '9'))
    		q++;
    
    	string _pinyin(p, q);
    	pinyin = _pinyin;
    
    	if ('0' <= *q && *q <= '9')
    		nums = *q - '0';
    	else
    		nums = 0;
    }
    
    int main()
    {
    	map<string, vector<string> > ssmap;
    	string str_raw;
    
        /* 定义常量 */
    	const string tag_start = "Code";
    	const string tag_search = "Search";
    	const string tag_end = "End";
    	string hanzi, pinyin;
    	int num;
    
    	cin >> str_raw;
    
        /* 等于开始信号 */
    	if (str_raw == tag_start)
    	{
    	    /* 读取编码表 */
    		cin >> str_raw;
    		while (str_raw != tag_search)
    		{
    			parse_raw(str_raw, hanzi, pinyin);
    			ssmap[pinyin].push_back(hanzi);
    			cin >> str_raw;
    		}
    
            /* 输入的search */
    		cin >> str_raw;
    
    		/* 解析输入的拼音 */
    		parse_input(str_raw, pinyin, num);
    
    
    		cin >> str_raw;
    
    		/* 结束标志位 */
    		if (str_raw == tag_end)
    		{
    		    /* 判断 这个拼音是否存在*/
    			if (ssmap.find(pinyin) == ssmap.end())
    			{
    				cout << "Erro" << endl;
    			}
    			else if (num > 0)
    			{
    			    /* 判断num是否存在 */
    			    if(num < ssmap[pinyin].size())
                    {
                        cout << ssmap[pinyin][num - 1] << endl;
                    }
                    else
                    {
                        cout << "Erro" << endl;
                    }
    
    			}
    			else
    			{
    			    /* 输出前5个 */
    				size_t i = 0;
    
    				for ( i = 0; i < ssmap[pinyin].size() - 1 && i != 4; i++)
    					cout << ssmap[pinyin][i] << ";";
    				cout << ssmap[pinyin][i] << endl;
    			}
    		}
    	}
    
    	return 0;
    }

[20151012101743233]: /images/20220731/cebccc9f7d72414cbf99d294862ffeec.png