数组常见的面试题

案例:数组{12,34,4567,22}  转换后1222344567

解题思路:对数组进行排序，后将数组转换为字符串

package com.demo;

/**
 * 
 * {12,34,4567,22}
 * 1222344567
 * @author Administrator
 *
 */
public class ArraySort {
    public static void main(String[] args) {
        
        int[] a={12,34,4567,22};
        System.out.println("变化前的数组:");
        
        for (int i = 0; i < a.length; i++) {
            System.out.print(a[i]+" ");
        }
        System.out.println();
        SortedArr(a);
        
        String s="";
        
        for (int i = 0; i < a.length; i++) {
            s+=a[i];
        }
        
        System.out.println("变化后的数组:");
        System.out.println(s);
    
    }
    
    public static void SortedArr(int[] a){
        
        int temp;
        
        for (int i = 0; i < a.length; i++) {
            for (int j = i+1; j < a.length; j++) {
                if(a[i]>a[j]){
                    temp=a[i];
                    a[i]=a[j];
                    a[j]=temp;
                }
            }
        }
    }
}