[Java] Two methods to find dates with more than 7 consecutive days in a month
- php是最好的语言Original
- 2018-08-09 15:16:512758browse
方法一：通过数组实现
package test;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.util.ArrayList;import java.util.List;import java.util.Random;public class ListData {
public static void main(String[] args) throws IOException {
List<String> list = new ArrayList<String>();
Random rd = new Random();
String str1 = new String();
File file = new File("E:\\date.txt");
FileWriter fis = new FileWriter(file);
File file_sort = new File("E:\\date_sort.txt");
FileWriter fis_sort = new FileWriter(file_sort);
for (int i = 0; i < 444; i++) {
str1 = (rd.nextInt(31) % 12 + 1) + "-" + (rd.nextInt(32) % 31 + 1);
fis.write(str1 + "\r\n");// list.add(str1);// System.out.println(str1);
}
fis.close();// list.add("8-2");// list.add("8-2");// list.add("8-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("8-2");// list.add("5-2");// list.add("5-3");// list.add("5-4");// list.add("5-5");// list.add("5-6");// list.add("5-7");// list.add("5-8");// list.add("5-9");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("8-2");// list.add("5-2");// list.add("5-2");// list.add("8-2");// list.add("5-2");// list.add("5-2");// list.add("8-1");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("8-4");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("8-5");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("8-6");// list.add("8-7");// list.add("5-2");// list.add("5-2");// list.add("5-2");// list.add("1-1");// list.add("1-2");// list.add("1-4");// list.add("1-5");// list.add("1-6");// list.add("1-7");// list.add("1-8");// list.add("1-9");// list.add("1-5");// list.add("1-6");// list.add("8-3");// list.add("1-1");// list.add("1-2");// list.add("1-4");// list.add("1-5");// list.add("1-6");// list.add("1-7");// list.add("1-3");//
// list.add("1-12");// list.add("1-13");// list.add("1-14");// list.add("1-15");// list.add("1-16");// list.add("1-17");// list.add("1-18");
list.add("1-1");
list.add("1-2");
list.add("1-4");
list.add("1-5");
list.add("1-6");
list.add("1-7");
list.add("1-3");
list.add("1-12");
list.add("1-13");
list.add("1-14");
list.add("1-15");
list.add("1-16");
list.add("1-17");
list.add("1-18");
list.add("1-20");
list.add("1-21");
list.add("1-22");
list.add("1-23");
list.add("1-24");
list.add("1-25");
list.add("1-26");
list.add("1-27");
list.add("1-28");
list.add("1-29");
list.add("1-30");
list.add("1-31");
int[][] date = new int[12][32];
for (String str : list) {
int ri = Integer.parseInt(str.split("-")[1]) - 1;
int yue = Integer.parseInt(str.split("-")[0]) - 1;
date[yue][ri] = 1;
}
for (int i = 0; i < 12; i++) {
int[][] mark = new int[1][2];
int k = 0;
System.out.println("--------" + (i + 1) + "月" + "---------------");
fis_sort.write("-------" + (i + 1) + "月" + "---------------" + "\r\n");
for (int j = 0; j < 31; j++) {
if (date[i][j] == 1) {
k++;
if (k >= 7 && date[i][j + 1] == 0) {
mark[0][0] = i;
mark[0][1] = j;
System.out.println((i + 1) + "月" + (j + 2 - k) + "日，开始连续" + k + "天");
fis_sort.write((i + 1) + "月" + (j + 2 - k) + "日，开始连续" + k + "天" + "\r\n");
for (int l = j - k + 1; l <= j; l++) {
System.out.println((i + 1) + "月" + (l + 1) + "日");
fis_sort.write((i + 1) + "月" + (l + 1) + "日" + "\r\n");
}
}
} else {
k = 0;
}
}
}
fis_sort.close();
}
}方法二：通过TreeSet实现
package test;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Map.Entry;import java.util.Random;import java.util.TreeSet;public class ListData_1 {
public static void main(String[] args) throws IOException {
List<String> list = new ArrayList<String>();
Random rd = new Random();
String str1 = new String();
File file = new File("E:\\date.txt");
FileWriter fis = new FileWriter(file);
File file_sort = new File("E:\\date_sort.txt");
FileWriter fis_sort = new FileWriter(file_sort);
for (int i = 0; i < 666; i++) {
str1 = (rd.nextInt(31) % 12 + 1) + "-" + (rd.nextInt(32) % 31 + 1);
fis.write(str1 + "\r\n");// list.add(str1);// System.out.println(str1);
}
fis.close();
list.add("1-1");
list.add("1-2");
list.add("1-4");
list.add("1-5");
list.add("1-6");
list.add("1-7");
list.add("1-3");
list.add("1-12");
list.add("1-13");
list.add("1-14");
list.add("1-15");
list.add("1-16");
list.add("1-17");
list.add("1-18");
list.add("1-20");
list.add("1-21");
list.add("1-22");
list.add("1-23");
list.add("1-24");
list.add("1-25");
list.add("1-26");
list.add("1-27");
list.add("1-28");
list.add("1-29");
list.add("1-30");
list.add("1-31");
//取出来放到map
HashMap<Integer,TreeSet<Integer>> map=new HashMap<Integer,TreeSet<Integer>>();
TreeSet setValue=null;
for (String str : list) {
int ri = Integer.parseInt(str.split("-")[1]);
int yue = Integer.parseInt(str.split("-")[0]);
if(!map.containsKey(yue)) {
setValue=new TreeSet<Integer>();
setValue.add(ri);
map.put(yue, setValue);
}else {//baohan
setValue=map.get(yue);
setValue.add(ri);
map.put(yue, setValue);
}
}
for (Entry<Integer, TreeSet<Integer>> entry : map.entrySet()) {
// System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
int month=entry.getKey();
TreeSet<Integer> value=entry.getValue();
String v=value.toString().replace("[", "").replace("]", "").replaceAll(" ", "");// System.out.println(v);
String []splDate=v.split(",");
int []v_char_arr=new int[splDate.length];
for (int i=0;i<splDate.length;i++) {
v_char_arr[i]=Integer.parseInt(splDate[i]);
}
int k=0;// for (int v1 : v_char_arr) {
// System.out.print(v1+" ");//
// }
// System.out.println();//
for (int i=0;i<v_char_arr.length-2;i+=1) {
int v1=v_char_arr[i];
int v2=v_char_arr[i+1];
int v3=v_char_arr[i+2];
if(v2-v1==1) {
k++;// System.out.println(v3-v2);// System.out.println(i+2+"------");
if(k>=6&&((v3-v2)>1||(i+2)==v_char_arr.length-1)) {
System.out.println(month+"月"+(v2-k)+"日，开始连续"+(k+1)+"天");
}
//
}else {
k=0;
}
}
System.out.println();
}
}
}相关推荐：
The above is the detailed content of [Java] Two methods to find dates with more than 7 consecutive days in a month. For more information, please follow other related articles on the PHP Chinese website!
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：Java interfaces and abstract classes and the difference between the twoNext article：Java interfaces and abstract classes and the difference between the two
Related articles
See more- How Do I Retrieve Source JARs from Maven Repositories?
- Overloading Constructors and Constructor Chaining.
- How to Achieve Transparent Rounded Corners in TextBubbleBorder?
- Why Does Setting the Seed in Java's Random Class Return the Same Number?
- Why Should I Avoid Using Regular Expressions to Parse HTML in Java?