62,614
社区成员
发帖
与我相关
我的任务
分享
import java.util.Arrays;
import java.util.Scanner;
public class MySort {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int num[]=new int[5];
Scanner input=new Scanner(System.in);
int i=0;
System.out.println("请输入五个整数");
//获取五个整数输入
while(i<5){
System.out.print("请输入第"+(i+1)+"个数:");
try{
num[i]=input.nextInt();
i++;
System.out.println();
}catch(NumberFormatException e){
input.nextLine();
System.out.println("你输入的不是整数,请重新输入!");
}
}
//排序前输出
System.out.println("排序前的数组元素如下");
for(int elem:num){
System.out.print(elem+" ");
}
System.out.println();
System.out.println("排序后的数组元素如下");
//对五个整数排序,先升序,再降序
Arrays.sort(num);
int num1[]=new int[5];
for(int j=0;j<5;j++)
num1[j]=num[4-j];
num=num1;
for(int elem:num){
System.out.print(elem+" ");
}
}
}
import java.util.Arrays;
import java.util.Scanner;
public class MySort {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int num[]=new int[5];
Scanner input=new Scanner(System.in);
int i=0;
System.out.println("请输入五个整数");
//获取五个整数输入
while(i<5){
System.out.print("请输入第"+(i+1)+"个数:");
try{
num[i]=input.nextInt();
i++;
System.out.println();
}catch(NumberFormatException e){
System.out.println("你输入的不是整数,请重新输入!");
}
}
//排序前输出
System.out.println("排序前的数组元素如下");
for(int elem:num){
System.out.print(elem+" ");
}
System.out.println();
System.out.println("排序后的数组元素如下");
//对五个整数排序,先升序,再降序
Arrays.sort(num);
int num1[]=new int[5];
for(int j=0;j<5;j++)
num1[j]=num[4-j];
num=num1;
for(int elem:num){
System.out.print(elem+" ");
}
}
}
import java.util.Arrays;
import java.util.Comparator;
public class Test4 {
public static void main(String[] args) {
Integer[] nums = {1,2,3,4,5,6};
Arrays.sort(nums, new MyComparator());
for (int i = 0; i < nums.length; i++) {
System.out.println(nums[i]);
}
}
}
class MyComparator implements Comparator<Integer> {
public int compare(Integer o1, Integer o2) {
return o2 - o1;
}
}