• Kickstart Practice Round 2017---A


    Problem

    The Constitution of a certain country states that the leader is the person with the name containing the greatest number of different alphabet letters. (The country uses the uppercase English alphabet from A through Z.) For example, the name GOOGLE has four different alphabet letters: E, G, L, and O. The name APAC CODE JAM has eight different letters. If the country only consists of these 2 persons, APAC CODE JAM would be the leader.

    If there is a tie, the person whose name comes earliest in alphabetical order is the leader.

    Given a list of names of the citizens of the country, can you determine who the leader is?

    Input

    The first line of the input gives the number of test cases, T. T test cases follow. Each test case starts with a line with an interger N, the number of people in the country. Then N lines follow. The i-th line represents the name of the i-th person. Each name contains at most 20 characters and contains at least one alphabet letter.

    Output

    For each test case, output one line containing Case #x: y, where x is the test case number (starting from 1) and y is the name of the leader.

    Limits

    1 ≤ T ≤ 100.
    1 ≤ N ≤ 100.

    Small dataset

    Each name consists of at most 20 characters and only consists of the uppercase English letters A through Z.

    Large dataset

    Each name consists of at most 20 characters and only consists of the uppercase English letters A through Z and ' '(space).
    All names start and end with alphabet letters.

    Sample


    Input 
     

    Output 
     
    2
    3
    ADAM
    BOB
    JOHNSON
    2
    A AB C
    DEF
    
    
    Case #1: JOHNSON
    Case #2: A AB C
    
    
    一开始的错误解法:
     
    思路:将每个名字的字母放到一个数组中,统计不同字母的个数,每个案例中个数最多的就是Leader,没有考虑到如果遇到相同字母数量的情况。incorrrect
     
    package kickstart2017;
    import java.io.*;
    public class CountryLeader {

        public static void main(String[] args) {
            File outfile = new File("D://Code//Java//workspace//kickstart2017//src//kickstart2017//outputforsmall.txt");    //创建输出文件对象
            try {
                FileWriter out =new FileWriter(outfile);    //创建FileWriter对象
                BufferedWriter bufw = new BufferedWriter(out);  //创建BufferedWriter类对象
                FileReader fr = new FileReader("D://Code//Java//workspace//kickstart2017//src//kickstart2017//A-small-practice.in");
                BufferedReader bufr = new BufferedReader(fr);     
                String cases = null;      
                //读取第一行信息得到case的值,为字符变量
                cases = bufr.readLine();
                int numofcases = Integer.parseInt(cases);    //字符串转变成int常量
                for(int j = 1;j < numofcases+1; j++){        //对每一个案列分别进行处理
                    String N = null;                
                    N = bufr.readLine();
                    int numofnames = Integer.parseInt(N);
                    int numofcharacter[] = new int[numofnames];    //数组存放每个名字的字母个数
                    String nameofarrays[] = new String[numofnames];//将所有名字放入到一个字符串数组中去
                    for(int k = 0;k < numofnames; k++){   //对每个名字即每行进行处理                    
                        int ch[] = new int[26];   //数组存放26个字母的出现次数
                        String names = bufr.readLine();   //读取一行,得到名字中包含所有的字母
                        nameofarrays[k] = names;
                        for(int m = 0;m < names.length();m++){
                            char c = names.charAt(m);  //依次取出每个字母
                            int index = c-'A';         //
                            ch[index] = ch[index] + 1;// 对应字母出现则存储字母的数组加1                        
                        }
                        int numofalp = 0;             //求出每个数组中不为0的元素的个数即为不同字母的个数            
                        for(int n = 0;n < 26; n++){
                            if(ch[n]>= 1){
                               numofalp++;
                            }
                        }
                        numofcharacter[k] = numofalp;  //将每个名字包含的字母数存储到数组中
                    }
                    int maxzhi = 0;
                    int maxzhiindex = 0;
                    for(int p = 0;p < numofnames;p++ ){    //求取每个案列中的最大值和其对应的名字
                        maxzhi = numofcharacter[0];
                        if(numofcharacter[p] > maxzhi){
                            maxzhi = numofcharacter[p];
                            maxzhiindex = p;
                        }
                    }
                    
                    System.out.println("Case #"+ j +":" +" " + nameofarrays[maxzhiindex]);
                    bufw.write("Case #"+ j +":" +" " + nameofarrays[maxzhiindex]);
                    bufw.newLine();
                }
                            
                bufr.close();          
                fr.close();              //将FileReader流关闭
                bufw.close();
                out.close();             // 将输出流关闭
                
            } catch (FileNotFoundException e) {
                
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
        }
        
        
    }
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  • 原文地址:https://www.cnblogs.com/simplepaul/p/6423256.html
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