有福利吗

小白求教

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有人能给我写吗

高级点的就用分词器加lucene统计

public static void main(String[] args) {
test("qwwtttfffggg");
}
public static void test(String str) {
int max_length = 0;
int temp_length = 0;
List<String> storeword = new ArrayList<String>();
List<String> storelength = new ArrayList<String>();
while (str.length() > 0) {//统计得到各个字符分别出现的次数
int length = str.length();
String first = str.substring(0, 1);
str = str.replaceAll(first, "");
if (max_length <= length - str.length()) {
temp_length = length - str.length();
if(temp_length>=max_length){
max_length = temp_length;
storeword.add(first);
storelength.add(max_length+"");
}
}
}
List<String> count = new ArrayList<String>();
for(int i=0;i<storelength.size();i++){
temp_length = Integer.valueOf(storelength.get(i));
if(temp_length>max_length){
max_length = temp_length; //得到最多次数
}
}
for(int k = 0; k<storelength.size();k++){
if(max_length==Integer.valueOf(storelength.get(k))){
count.add(k+"");
}
}
System.out.println("出现次数最多的字符为:");
for(int l = 0;l<count.size();l++){
System.out.print(storeword.get(Integer.valueOf(count.get(l)))+","); //得到出现次数对多的字符
}
System.out.println();
System.out.println("出现的次数为"+max_length+"次");
}

再稍微修改了下
public static void main(String[] args) {
while(true){
System.out.println("请输入字符:");
Scanner scan = new Scanner(System.in);
String date = scan.nextLine();
test(date);
}
}
public static void test(String str) {
int max_length = 0;
int temp_length = 0;
List<String> storeword = new ArrayList<String>();
List<String> storelength = new ArrayList<String>();
while (str.length() > 0) {//统计得到各个字符分别出现的次数
int length = str.length();
String first = str.substring(0, 1);
str = str.replaceAll(first, "");
if (max_length <= length - str.length()) {
temp_length = length - str.length();
if(temp_length>=max_length){
max_length = temp_length;
storeword.add(first);
storelength.add(max_length+"");
}
}
}
List<String> count = new ArrayList<String>();
for(int i=0;i<storelength.size();i++){
temp_length = Integer.valueOf(storelength.get(i));
if(temp_length>max_length){
max_length = temp_length; //得到最多次数
}
}
for(int k = 0; k<storelength.size();k++){
if(max_length==Integer.valueOf(storelength.get(k))){
count.add(k+"");
}
}
System.out.println("出现次数最多的字符为:");
for(int l = 0;l<count.size();l++){
System.out.print(storeword.get(Integer.valueOf(count.get(l)))+","); //得到出现次数对多的字符
}
System.out.println();
System.out.println("出现的次数为"+max_length+"次");
}