五月九号java

佚名 6年前 (2019-05-10) 随笔 1314人围观抢沙发百度已收录

package 五月九号;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

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public class Main {

public Main() {
// TODO 自动生成的构造函数存根
}

public static List<String> l = new ArrayList<String>();

public static void main(String[] args) throws IOException {
// TODO 自动生成的方法存根

// 无用词
l.add("the");
l.add("a");
l.add("is");
l.add("are");
l.add("she");
l.add("he");
l.add("and");
duanyu("D://piao.txt");
System.out.println();
int n = 0;
while (n != 6) {
Scanner shuru = new Scanner(System.in);
System.out.println("1.字母");
System.out.println("2.单词");
System.out.println("3.单词前多少个");
System.out.println("4.字母前多个");
System.out.println("5.增加无用单词");
System.out.println("6.退出");
System.out.println();
String str = "D://piao.txt";
n = shuru.nextInt();
switch (n) {

case 1:

zimu(str);
break;
case 2:
try {
danci(str);
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}

break;
case 3:
int x = 0;
x = shuru.nextInt();
try {
danci(str, x);
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
break;
case 4:
x = shuru.nextInt();
zimu(str, x);
break;
case 5:
String b = shuru.next();
AddString(b);
break;
case 6:
System.out.println("退出成功");
break;
}
}
}

public static void duanyu(String s) throws IOException
{
BufferedReader br = new BufferedReader(new FileReader(s));

StringBuffer sb = new StringBuffer();
String text = null;
while ((text = br.readLine()) != null) {
sb.append(text);// 将读取出的字符追加到stringbuffer中
}
br.close(); // 关闭读入流
String str = sb.toString().toLowerCase(); // 将stringBuffer转为字符并转换为小写
System.out.println(str);
String a="";//前
String b="";//后
char c=' ';
for(int i=0;i<str.length();i++)
{
//System.out.println(str.charAt(i));
if(str.charAt(i)!=c)
{
a=str.charAt(i)+"";
}
else
{

}
}

}
public static void danci(String s, int x) throws IOException {
{
BufferedReader br = new BufferedReader(new FileReader(s));

StringBuffer sb = new StringBuffer();
String text = null;
while ((text = br.readLine()) != null) {
sb.append(text);// 将读取出的字符追加到stringbuffer中
}
br.close(); // 关闭读入流

String str = sb.toString().toLowerCase(); // 将stringBuffer转为字符并转换为小写
String[] words = str.split("[^(a-zA-Z)]+"); // 非单词的字符来分割，得到所有单词
Map<String, Integer> map = new HashMap<String, Integer>();

for (String word : words) {
if (map.get(word) == null) { // 若不存在说明是第一次，则加入到map,出现次数为1
map.put(word, 1);
} else {
map.put(word, map.get(word) + 1); // 若存在，次数累加1
}
}

// 排序
List<Map.Entry<String, Integer>> list = new ArrayList<Map.Entry<String, Integer>>(map.entrySet());
Comparator<Map.Entry<String, Integer>> comparator = new Comparator<Map.Entry<String, Integer>>() {
public int compare(Map.Entry<String, Integer> left, Map.Entry<String, Integer> right) {
return (left.getValue().compareTo(right.getValue()));
}
};
// 集合默认升序升序
Collections.sort(list, comparator);
int i1 = 0;
for (int i = 0; i < list.size(); i++) {// 由高到低输出
if (returnString(list.get(list.size() - i - 1).getKey()).equals("")) {
} else {
i1++;
if (i1 <= x) {
System.out.println(list.get(list.size() - i - 1).getKey() + ":"
+ list.get(list.size() - i - 1).getValue());
}
}
}

}
}

public static void danci(String s) throws IOException {
{
BufferedReader br = new BufferedReader(new FileReader(s));

StringBuffer sb = new StringBuffer();
String text = null;
while ((text = br.readLine()) != null) {
sb.append(text);// 将读取出的字符追加到stringbuffer中
}
br.close(); // 关闭读入流

// 排序
List<Map.Entry<String, Integer>> list = new ArrayList<Map.Entry<String, Integer>>(map.entrySet());

Comparator<Map.Entry<String, Integer>> comparator = new Comparator<Map.Entry<String, Integer>>() {
public int compare(Map.Entry<String, Integer> left, Map.Entry<String, Integer> right) {
return (left.getValue().compareTo(right.getValue()));
}
};
// 集合默认升序升序
Collections.sort(list, comparator);

for (int i = 0; i < list.size(); i++) {// 由高到低输出
if (returnString(list.get(list.size() - i - 1).getKey()).equals("")) {

} else {
System.out.println(
list.get(list.size() - i - 1).getKey() + ":" + list.get(list.size() - i - 1).getValue());
}
}

}
}

public static void zimu(String str) {
double[] list = new double[26];
int[] c = new int[26];
for (int k = 0; k < 26; k++) {
list[k] = 0;
}
for (int k = 0; k < 26; k++) {
c[k] = k + 65;
}
String line = "";
int a = 0;
int b = 0;
int s = 0;
try {
FileReader fr = new FileReader(str);
Scanner in = new Scanner(fr);
while (in.hasNext()) {
line = in.nextLine();
// System.out.println(line);
for (int i = 0; i < line.length(); i++) {
a = line.charAt(i);

if (a >= 65 && a <= 90) {
b = a - 65;
}
if (a >= 97 && a <= 122) {
b = a - 97;
}
// System.out.println(b);
list[b] += 1;
s++;
}
}

for (int t = 0; t < 26; t++) {
list[t] = list[t] / s;

// System.out.println(list[t]);
}
int t, k;
double d;
int e;
for (t = 0; t < 25; t++) {
for (k = 0; k < 25 - t; k++) {
if (list[k] < list[k + 1]) {
d = list[k + 1];
list[k + 1] = list[k];
list[k] = d;

e = c[k + 1];
c[k + 1] = c[k];
c[k] = e;
}
}
}

for (t = 0; t < 26; t++) {
System.out.print((char) (c[t]) + " ");
System.out.println(String.format("%.2f", list[t] * 100) + "%");
}
} catch (Exception e) {

}
}

public static void zimu(String str, int x) {
double[] list = new double[26];
int[] c = new int[26];
for (int k = 0; k < 26; k++) {
list[k] = 0;
}
for (int k = 0; k < 26; k++) {
c[k] = k + 65;
}
String line = "";
int a = 0;
int b = 0;
int s = 0;
try {
FileReader fr = new FileReader(str);
Scanner in = new Scanner(fr);
while (in.hasNext()) {
line = in.nextLine();
// System.out.println(line);
for (int i = 0; i < line.length(); i++) {
a = line.charAt(i);

if (a >= 65 && a <= 90) {
b = a - 65;
}
if (a >= 97 && a <= 122) {
b = a - 97;
}
// System.out.println(b);
list[b] += 1;
s++;
}
}

for (int t = 0; t < 26; t++) {
list[t] = list[t] / s;

e = c[k + 1];
c[k + 1] = c[k];
c[k] = e;
}
}
}

for (t = 0; t < 26; t++) {
if (t < x) {
System.out.print((char) (c[t]) + " ");
System.out.println(String.format("%.2f", list[t] * 100) + "%");
}
}
} catch (Exception e) {

}
}

// 增加无用单词
public static void AddString(String b) {
l.add(b);
}

// 无用词表去除
public static String returnString(String s) {

boolean flag = true;

for (int i = 0; i < l.size(); i++) {
if (s.equals(l.get(i))) {
flag = false;
}
}
if (flag) {
return s;
} else {
return "";

}

}
}

别问我是啥，我忘了