产生不重复的随机数的方法

把0到99的数排列,不重复.

适用于在做多个随机方块遮照图片时和在播放动画时随机播放音乐,但不重复.等

方法一:

oldtime=getTimer();

my_array=new Array();

n=100;

for(var i=0;i

my_array[i]=i;

}

for(var i=0;i

var tmp1=random(n);

var tmp2=my_array[i];

my_array[i]=my_array[tmp1];

my_array[tmp1]=tmp2;

}

trace(my_array);

trace(getTimer()-oldtime);//程序运行时间

//----------------------------------------------------------

--------------方法二-------------------------------------

n=getTimer();

Array.prototype.randomize = function() {

this.sort(function(a, b) { return random(2)>0 ? 1 : -1;});

}

var myArray = new Array();

for(var i=0;i<1000;i++){

myArray[i]=i;

}

myArray.randomize();

trace(myArray);

trace(getTimer()-n);

方法三:

var num_arr:Array = new Array();

var j = 0;

var judge = 0;

do {

var temp_num = Math.round(Math.random()*100);

for (var i = 0; i

var temp_n = num_arr[i];

if (temp_num == temp_n) {

judge = 1;

break;

} else {

judge = 0;

}

}

if (judge == 0) {

num_arr.push(temp_num);

j++;

_root["t"+j].text = temp_num;

}

} while (j<100);

trace(num_arr);

制作过程:

建两层,各放一图片,其中上层的图片定义实例名:pic_mc

然后画一矩形,转化为MC,定义ID名为 box,然后在帧上写入AS:

creatmask();

//建立遮照

newnum();

//产生随机数

var i = -1;

var n = 0;

_root.onEnterFrame = function() {

i++;

if (i<300) {

eval("_root.m1_mc.box"+my_array[n]).removeMovieClip();

//移除方块

n++;

}

if (i>=400 && i<700) {

m = my_array[i-400];

_root.m1_mc.attachMovie("box", "box"+m, m+10, {_x:int(m/15)*20, _y:m%15*20});

//加载方块

}

if (i>800) {

i = 0;

n = 0;

}

};

//-------------------------------------

function creatMask() {

_root.createEmptyMovieClip("m1_mc", 1);

m1_mc._x = 0;

mc_mc._y = 0;

for (var i = 0; i<300; i++) {

_root.m1_mc.attachMovie("box", "box"+i, i+10, {_x:int(i/15)*20, _y:i%15*20});

}

pic_mc.setMask(m1_mc);

}

function newnum() {

my_array = new Array();

n = 300;

for (var i = 0; i

my_array[i] = i;

}

for (var i = 0; i

var tmp1 = random(n);

var tmp2 = my_array[i];

my_array[i] = my_array[tmp1];

my_array[tmp1] = tmp2;

}

}

在上面的基础上有所改进

制作方法与上有点差别,就是在box元件中的方块转化为MC,然后编辑这个MC,在上面做点运动变形.

newnum();

//产生随机数

_root.createEmptyMovieClip("m1_mc", 1);

m1_mc._x = 0;

mc_mc._y = 0;

pic_mc.setMask(m1_mc);

for (var i = 0; i<300; i++) {

_root.m1_mc.attachMovie("box", "box"+i, i+100, {_x:int(i/15)*20, _y:i%15*20});

}

var i = -1;

_root.onEnterFrame = function() {

i++;

if (i<300) {

m = my_array[i];

eval("_root.m1_mc.box"+my_array[m]+".p").play();

}

if (i>=400 && i<700) {

m = my_array[i-400];

eval("_root.m1_mc.box"+my_array[m]+".p").play();

}

if (i>800) {

i = -1;

}

};

//-------------------------------------

function newnum() {

my_array = new Array();

n = 300;

for (var i = 0; i

my_array[i] = i;

}

for (var i = 0; i

var tmp1 = random(n);

var tmp2 = my_array[i];

my_array[i] = my_array[tmp1];

my_array[tmp1] = tmp2;

}

}