【程序40】
题目:字符串排序。
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test40 {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
ArrayList<String> arrayList = new ArrayList<>();
int i = 0;
String str = "";
System.out.println("请输出字符串(回车下一组,输入stop则停止输入):");
while(s.hasNext()){
str = s.nextLine();
if(!str.equalsIgnoreCase("stop")){
arrayList.add(str);
}else{
break;
}
}
System.out.println("您输入的顺序为:");
System.out.println(arrayList.toString());
System.out.println("排序:");
stringSort(arrayList);
}
private static void stringSort(ArrayList<String> arrList) {
ArrayList<String> arrayList1 = new ArrayList<>();
ArrayList<String> arrayList2 = new ArrayList<>();
//选择排序法
for(int i=0; i<arrList.size()-1; i++){
for(int j=i; j<arrList.size(); j++){
if(arrList.get(i).compareTo(arrList.get(j)) > 0 ){
swap(arrList,i,j);
}
}
}
System.out.println(arrList.toString());
}
//数组交换位置
private static void swap(ArrayList<String> arr, int i , int j ){
String strTmp = (String) arr.get(i);
arr.set(i,arr.get(j) );
arr.set(j, strTmp);
}
}
输出结果:
请输出字符串(回车下一组,输入stop则停止输入):
dsfg
sgd
fhfhfrc
cfg
zsdwefc
abced
stop
您输入的顺序为:
[dsfg, sgd, fhfhfrc, cfg, zsdwefc, abced]
排序:
[abced, cfg, dsfg, fhfhfrc, sgd, zsdwefc]