比较2个数组

java 代码

package com.ideal.grid;

import java.util.Vector;

public class Miao {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //比较2个数组
        //备注：所谓的增加或减少 是拿后边的数组和前边的数组比较
        String [] A1  = {"A","B","C","D"};
        String [] A2  = {"E","D","F","B"};
        Vector vc = new Vector();
        Vector vc2 = new Vector();
        for (int i = 0; i < A1.length; i++) {
            String str1 = A1[i];
            for (int j = 0; j < A2.length; j++) {
                String str2 = A2[j];
                if(str1.equals(str2)){
                    vc.remove(str1);
                    break;
                }
                else{
                    if(!vc.contains(str1)){
                        vc.add(str1);
                    }
                }
            }
        }
        for (int i = 0; i < A2.length; i++) {
            String str1 = A2[i];
            for (int j = 0; j < A1.length; j++) {
                String str2 = A1[j];
                if(str1.equals(str2)){
                    vc2.remove(str1);
                    break;
                }
                else{
                    if(!vc2.contains(str1)){
                        vc2.add(str1);
                    }
                }
            }
        }
        System.out.println("开始打印比较结果");
        System.out.println("开始打印增加的元素");
        for(int i = 0 ; i < vc.size();i++){
            System.out.println(vc.get(i));
        }
        System.out.println("开始打印减少的元素");
        for(int i = 0 ; i < vc2.size();i++){
            System.out.println(vc2.get(i));
        }
    }

}

 

对于整形数组的比较

java 代码

public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a[] ={1,3,5,9,2};
        int b[] ={2,3,9,8,6};
        Vector vc = new Vector();
        for (int i = 0; i < a.length; i++) {
            int aa = a[i];
            for (int j = 0; j < b.length; j++) {
                int bb = b[j];
                if(aa==bb){
                    vc.remove(new Integer(aa));
                    break;
                }else{
                    if(!vc.contains(new Integer(aa))){
                        vc.add(new Integer(aa));
                    }
                }
            }
        }
        System.out.println("打印a有b没有的元素");
        for (int i = 0; i < vc.size(); i++) {
            System.out.println(vc.get(i));
            System.out.println("====================");
        }

    }

}