java 倒入一篇文章,显示每个字母的出现概率,从大到小排序
作者:互联网
1 package com_1; 2 import java.io.BufferedReader; 3 import java.io.FileReader; 4 import java.io.IOException; 5 import java.math.BigInteger; 6 import java.text.DecimalFormat; 7 import java.util.ArrayList; 8 import java.util.Comparator; 9 import java.util.TreeMap; 10 import java.util.TreeSet; 11 public class Shuru2 12 { 13 public static void main(String [] args) throws IOException { 14 BufferedReader br=new BufferedReader(new FileReader("F:\\eclipse-workspace\\com_1\\src\\1.txt")); 15 TreeMap<Character,Integer> hm=new TreeMap<>(); 16 int bb; 17 while((bb=br.read())!=-1) { 18 if((bb>='A'&&bb<='Z')||(bb>'a'&&bb<='z')) { 19 hm.put((char)bb,hm.containsKey((char)bb)?hm.get((char)bb)+1:1); 20 } 21 22 } 23 br.close(); 24 int max=0; 25 int sum=0; 26 int t=0; 27 for(Character k: hm.keySet()) { 28 sum=sum+hm.get(k); 29 } 30 TreeSet<Character> ts=new TreeSet<>(new Comparator<Character>() 31 { 32 public int compare(Character a,Character b) { 33 int num=hm.get(a)-hm.get(b); 34 return num==0?1:(-num); 35 } 36 }); 37 for(Character k: hm.keySet()) { 38 ts.add(k); 39 } 40 DecimalFormat df = new DecimalFormat("0.00%"); 41 for (Character c : ts) 42 { 43 float bai=(float)hm.get(c)/sum; 44 45 System.out.println(c+" "+hm.get(c)+" "+df.format(bai)); 46 } 47 48 49 50 //System.out.println(sum); 51 }}
整个人都不好了
标签:java,bb,Character,new,倒入,从大到,hm,import 来源: https://www.cnblogs.com/sunhongbin/p/11794828.html