从数组中随机获得1个子集

var i, j:uint;
var arr1:Array = new Array(1,2,3,4,5,6,7,8,9,"a","b","c","d","e","f");
var arr2:Array = new Array();
var len:uint = arr1.length;
for (i = 0; i < len; i ++) {
	if (arr2.length < 6) {
		j = Math.floor(Math.random() * arr1.length);
		arr2.push(arr1.splice(j,1));
	} else {
		break;
	}
	trace(i)
}
trace(arr1)
trace(arr2)

var i, j:uint;

var arr1:Array = new Array(1,2,3,4,5,6,7,8,9,"a","b","c","d","e","f");

var arr2:Array = new Array();

var len:uint = arr1.length;

for (i = 0; i < len; i ++) {

if (arr2.length < 6) {

j = Math.floor(Math.random() * arr1.length);

arr2.push(arr1.splice(j,1));

} else {

break;

}

trace(i)

}

trace(arr1)

trace(arr2)

从数组中随机获得1个子集

5xue