编码实现 将10个字符串中的数字类型和字符类型加以区别，数字类型按大小排序，字符类型按长度排序
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import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;
public class StrAndIntCount {
static List<Integer> intList=new ArrayList<Integer>();
static List<String> strList=new ArrayList<String>();
public static void main(String[] args) {
Scanner console = new Scanner(System.in);
for (int i = 0; i < 10; i++) {
System.out.println("请输入你的"+(i+1)+"个字符串:");
String str=console.nextLine();
spit(str);
}
sort();
showList();
}
/**演示排序的集合*/
private static void showList() {
System.out.println("整数的排序：");
for(int a : intList){
System.out.print(a+", ");
}
System.out.println();
System.out.println("字符串的排序：");
for(String b : strList){
System.out.print(b+", ");
}
}
/**1,整数集合按从大到小排序
* 2，字符结合按字符串长度排序
* */
private static void sort() {
//整数集合排序
Collections.sort(intList, new Comparator<Integer>() {
public int compare(Integer o1, Integer o2) {
return o2-o1;
}
});
//字符集合排序
Collections.sort(strList, new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return o2.length()-o1.length();
}
});
}
/**判断用户输入的字符类型*/
private static void spit(String str) {
String regInt="^\\d*$";
if(str.matches(regInt)){
int intStr=Integer.parseInt(str);
intList.add(intStr);
}
else{
strList.add(str);
}
}
}
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不知道是不是你想要的
- Java code
package com.zf.thread;import java.util.Arrays;import java.util.Comparator;import java.util.LinkedList;public class Thread4 { public static void main(String[] args) { String[] strs = new String[] {"fdasfa","fda" ,"321","432","222" ,"343","5k321","643jk432" ,"fsds"}; LinkedList<String> linkedList = new LinkedList<String>(); int numeralSize = 0 ; //记录数字的个数 for (String s : strs) { if(s.matches("\\d+")){ linkedList.addFirst(s); //数字放前 numeralSize++; }else{ linkedList.addLast(s); //字符串放后 } } strs = linkedList.toArray(new String[linkedList.size()]); Arrays.sort(strs, 0 , numeralSize, new NumeralComparator()); Arrays.sort(strs, numeralSize , strs.length, new StringComparator()); //排序后 for (String string : strs) { System.out.println(string); } }}/** * 数字类型比较器 * @author zhoufeng */class NumeralComparator implements Comparator<String>{ @Override public int compare(String o1, String o2) { return Integer.valueOf(o1) - Integer.valueOf(o2); } }/** * String类型比较器 * @author zhoufeng */class StringComparator implements Comparator<String>{ @Override public int compare(String o1, String o2) { return o1.length() - o2.length(); } }