小技巧

1 js和java中的不定参数

小案列（js)

<!doctype html>
<html>
<head>
<script>
    function add(){
        sum=0;
        for( var i=0;i<arguments.length;i++){
            sum=sum+arguments[i];
        }
        return sum;
    }
    alert(add(1,3,5));
</script>
</head>
<body>
<body>
</html>
View Code

 

小案列（java)

public class Test{
    
    public static void main(String[] args){
        show("a","b");
        show("a","b","c");
        show("a","b","c","d");
        show("a","b","c","d","e");
    }
    
    
    public static void show(String...args){
        for(String s: args){
            System.out.print(s+"    ");
        }
        System.out.println();    
    }
}
View Code

 

posted @ 2015-07-27 10:06  Animationer  阅读(221)  评论(0)  编辑  收藏  举报