題目鏈接：http://poj.org/problem?id=1598
技巧：句子中單詞的查找填大∨ㄌ澹可以通過替換掉不是字母的字符 胳岂，然后用indexof查找

 public static void main(String args[]) {    
        Scanner cin  = new Scanner(System.in);
 
        int n,m;
        String[] keyw = null;
        String[] excuse = null;
        String[] excuseLower = null;
        int [] count;
        int max;
        int cases = 1;
        while(cin.hasNext()){
            String[] t = cin.nextLine().split(" ");
            n = Integer.parseInt(t[0]);
            m = Integer.parseInt(t[1]);
            keyw = new String[n];
            excuse = new String[m];
            excuseLower = new String[m];
            count = new int[m];
            max = 0;
            for (int i = 0; i < n; i++) {
                
                keyw[i] = cin.nextLine().toLowerCase();
            }
            for (int i = 0; i < m; i++) {
                excuseLower[i] = cin.nextLine();
                excuse[i] = excuseLower[i].toLowerCase();
                String temp = " ";
                for (int j = 0; j < excuse[i].length(); j++) {
                    if(Character.isLetter(excuse[i].charAt(j)))
                        temp+=excuse[i].charAt(j);
                    else
                        temp+="#";
                }
                
                for (int j = 0; j < n; j++) {
                    if (temp.indexOf("#"+keyw[j]+"#")>0) {
                        count[i]++;
                    }else if(temp.indexOf(keyw[j]+"#")==0){
                        count[i]++;
                    }else if(temp.indexOf("#"+keyw[j])==(temp.length()-keyw[j].length()-1)){
                        count[i]++;
                    }
                }
                if(count[i]>max)
                    max = count[i];
            }
            System.out.println("Excuse Set #"+cases++);
            for (int i = 0; i < m; i++) {
                if(count[i]==max)
                    
                    System.out.println(excuseLower[i]);
            }
            System.out.println("");
            
        }
//      printAr(keyw);
//      printAr(excuse);
        
    }

     static void printAr(Object [] ar){
         for (Object object : ar) {
            System.out.println(object);
        }
     }
    ```