我有一个问题,如果我有这样的输入:"Thanks Thanks Thanks car car",输出会是 "thanks"。 "Thanks Thanks Thanks car car" 输出的是 "thanks". 如果我的单词以大写字母开头,它将以小写字母打印该单词。
public class Main {
public static void main(String[] args) throws IOException {
String line;
String[] words = new String[100];
Map < String, Integer > frequency = new HashMap < > ();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
while ((line = reader.readLine()) != null) {
line = line.trim();
if (!line.isEmpty()) {
words = line.split("\\W+");
for (String word: words) {
String processed = word.toLowerCase();
processed = processed.replace(",", "");
if (frequency.containsKey(processed)) {
frequency.put(processed,
frequency.get(processed) + 1);
} else {
frequency.put(processed, 1);
}
}
}
}
int mostFrequentlyUsed = 0;
String theWord = null;
for (String word: frequency.keySet()) {
Integer theVal = frequency.get(word);
if (theVal > mostFrequentlyUsed) {
mostFrequentlyUsed = theVal;
theWord = word;
} else if (theVal == mostFrequentlyUsed && word.length() <
theWord.length()) {
theWord = word;
mostFrequentlyUsed = theVal;
}
}
System.out.printf(theWord);
}
为了让代码以输入的格式打印最常用的单词,而不是小写字母,你可以修改下面一行代码。
String processed = word.toLowerCase();
把它改成.NET。
String processed = word;
但要注意的是 containsKey()
方法是 区分大小写 并不会认为 "谢谢 "和 "感谢 "是同一个词。
Please find the below program which print both upper and lower case based on input.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;
public class Main {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String[] strArr=reader.readLine().split(" ");
String result=null;
int maxCount=0;
Map<String, Integer> strMap=new HashMap<String, Integer>();
int count=0;
for(String s:strArr){
count=0;
if(strMap.containsKey(s)){
count=strMap.get(s);
strMap.put(s,++count);
}else{
strMap.put(s, ++count);
}
}
//find Maximum
for(Map.Entry<String, Integer> itr: strMap.entrySet()){
if(maxCount==0){
maxCount=itr.getValue();
result=itr.getKey();
}else{
if(maxCount < itr.getValue()){
maxCount=itr.getValue();
result=itr.getKey();
}
}
}
// No of occurences with count
System.out.println("word"+ result+"count"+ maxCount);
printInLowerOrUpperCare(result);
}
public static void printInLowerOrUpperCare(String result){
if(result.charAt(0) >='a' && result.charAt(0) >= 'z' ){
System.out.println(result.toUpperCase());
}else{
System.out.println(result.toLowerCase());
}
}
}