<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
var str = ‘‘;
var add =[1,2,3,4,5,6,8,9];
var newArr = [1,2,3,4,5,6,7,8,9,-1,-2,-3,-4,-5,-6,-7,-8,-9];
function getN(arr){
return Math.floor(Math.random() * arr.length + 1)-1;
}
var resultArr = [];
var log = ‘‘;
function randNum(){
for(var i =0;i<80;i++){
var num = newArr[getN(newArr)];//随机取了一个数字 Math.abs(aaa);
if(num < 0){//负数
if(inArray(Math.abs(num),resultArr) != -1 && (repeatNum(num,resultArr) != repeatNum(Math.abs(num),resultArr))){//正数存在,而且正负是不成对
resultArr.push(num);
} else {//正数不存在
resultArr.push(-num);
}
} else {//正数
if((repeatNum(-num,resultArr) == repeatNum(Math.abs(num),resultArr))){//正数存在,而且正负成对
resultArr.push(num);
} else {//正数不存在
resultArr.push(-num);
}
}
}
str += resultArr.join(‘,‘) + ‘|‘ + check(resultArr) + ‘<br>‘;
}
function getArr(n){
for(var i = 0; i<n; i++){
resultArr.length =0;
randNum();
}
}
//查找索引
function inArray(t,arr){
if(arr.indexOf){
return arr.indexOf(t);
}
for(var i=arr.length;i--;){
if(arr[i]===t){
return i*1;
}
};
return -1;
}
//删除数组某一个
function deleInArray(n,arr){
if(n<0) return false;
arr.splice(n,1);
}
//重复次数
function repeatNum(t,arr){
var times = 0;
for(var i = 0;i<arr.length;i++){
if(t == arr[i]){
times ++;
}
}
return times;
}
function addFunc(){
var newNum = newArr[getN(add)];
if(inArray(newNum,resultArr) == -1){//不存在
resultArr.push(newNum);
} else {
addFunc();
}
}
//检查数据
function check(arr){
var maxNum = 0;
var str = ‘‘;
for(var i = 0; i<arr.length; i++){
maxNum += arr[i];
if(maxNum >= 45){
str = ‘不可用‘ + ‘|‘ + ‘第‘ + i + ‘个数字‘ + ‘|‘ + ‘数字是：‘ + arr[i];
break;
} else {
str = ‘可用‘;
}
}
return str;
}
getArr(100);
document.write(str);
</script>
</body>
</html>
目的是产生，数组长度是80的序列。正负相抵消，最后只剩下1到9就当作是中奖！注意要先产生正的才能出现负的！
时间： 2024-10-07 15:17:01