java Arrays打印数组元素列表 java Arrays快速打印数组的数据元素列表案例

public static strictfp void main(String[] args) {
 
 String[][] arr = {{"aaa","bbb"},{"ccc"}};
 for(int x=0;x<arr.length;x++){
  for(int y=0;y<arr[x].length;y++){
  System.out.println(arr[x][y]);
  }
 }
 
 //Arrays.deepToString 快速打印一个二维数组的数据元素列表 
 System.out.println(Arrays.deepToString(arr));
 }

import java.util.*;
public class Program_kuaipai 
{
 
 public static void main(String[] args) 
 {
 String str = "12 34 1 -5 9 100 55 0";
 String[] numStrs = str.split(" ");
 int[] numArray = new int[numStrs.length];
 for(int i=0;i<numStrs.length;i++)
 {
  numArray[i] = Integer.valueOf(numStrs[i]);
 }
 quickSort(numArray);//快速排序
 /*for(int i=0;i<numStrs.length;i++)
 {
  System.out.println(numArray[i]);
 }*///用for循环输出整形数组
 System.out.println(Arrays.toString(numArray));//用Arrays.toString()输出
 }
 public static void quickSort(int[] numArray)
 {
 if(numArray.length>0) 
 {
  quickSort(numArray,0,numArray.length-1);
 }
 }
 private static void quickSort(int[] numArray,int left,int right)
 {
 if(left>right)
 {
  return;
 }
 int i=left;
 int j=right;
 int sentry=numArray[left];//找一个“哨兵”
 //int sentry=numArray[(i+j)/2];
 while(i<j)
 {
  while(i<j&&numArray[j]>sentry)//从右向左找一个比“哨兵”小的值
  {
  j--;
  }
  while(i<j&&numArray[i]<=sentry)//从左向右找一个比“哨兵”大的值
  {
  i++;
  }
  if(i<j)//将两个值交换位置
  {
  int mid=numArray[i];
  numArray[i]=numArray[j];
  numArray[j]=mid;
  }
 }
 int mid=numArray[i];
 numArray[i]=numArray[left];
 numArray[left]=mid;//改变“哨兵”的位置
 quickSort(numArray, left, i-1 );//递归，将左部分再次进行快排
 quickSort(numArray, i+1, right );//递归，将右部分再次进行快排
 }
}

import java.util.*;
public class Program_kuaipai
{
 
 public static void main(String[] args) 
 {
 Scanner scan = new Scanner(System.in);
 String str = scan.nextLine();//输入需要排序的数字
 String[] numStrs = str.split(" ");
 int[] numArray = new int[numStrs.length];
 for(int i=0;i<numStrs.length;i++)
 {
  numArray[i] = Integer.valueOf(numStrs[i]);
 }
 quickSort(numArray);//快速排序
 /*for(int i=0;i<numStrs.length;i++)
 {
  System.out.println(numArray[i]);
 }*///用for循环输出整形数组
 //Arrays.sort(numArray);//用Arrays.sort()的排序
 System.out.println(Arrays.toString(numArray));//用Arrays.toString()输出
 }
 public static void quickSort(int[] numArray)
 {
 if(numArray.length>0) 
 {
  quickSort(numArray,0,numArray.length-1);
 }
 }
 private static void quickSort(int[] numArray,int left,int right)
 {
 if(left>right)
 {
  return;
 }
 int i=left;
 int j=right;
 int sentry=numArray[left];//找一个“哨兵”
 while(i<j)
 {
  while(i<j&&numArray[j]>sentry)//从右向左找一个比“哨兵”小的值
  {
  j--;
  }
  while(i<j&&numArray[i]<=sentry)//从左向右找一个比“哨兵”大的值
  {
  i++;
  }
  if(i<j)//将两个值交换位置
  {
  int mid=numArray[i];
  numArray[i]=numArray[j];
  numArray[j]=mid;
  }
 }
 int mid=numArray[i];
 numArray[i]=numArray[left];
 numArray[left]=mid;//改变“哨兵”的位置
 quickSort(numArray, left, i-1 );//递归，将左部分再次进行快排
 quickSort(numArray, i+1, right );//递归，将右部分再次进行快排
 }
}