<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>隔m杀1</title>
</head>
<body>
</body>
</html>
<script>
(function(w){
function Person(ele){
this.ele = ele;
this.next = null;
}
w.List = function(){
this.head = new Person(1);
this.head.next = this.head;
}
List.prototype={
//插入item元素后面
insert:function(newPer,item){
var later = item.next;
item.next = newPer;
newPer.next= later;
},
//查找元素
find:function(item){
var current = this.head;
while(current.next !== this.head && current.next !== item){
current = current.next;
}
return current;
},
//打印所有元素
print:function(){
var current =this.head;
var str = current.ele;
while(current.next !== this.head){
current = current.next;
str += ","+current.ele;
}
document.write(str);
},
//快速生成链表元素
add:function(m){
var temp;
var count;
if(m>1){
count = 2;
temp = new Person(2);
this.head.next =temp;
while(++count <= m){
this.insert(new Person(count),temp);
temp = temp.next;
}
temp.next = this.head;
}
},
//找到元素
find:function(item){
var current = this.head;
while(current.ele !== item && current.next !== this.head){
current = current.next;
}
return current;
},
//找到前一个
findpre:function(item){
var current = this.head;
var pre;
while(current.ele !== item && current.next !== this.head ){
pre = current;
current = current.next;
}
return pre;
},
//找到后面第几位
findLater:function(item,n){
var current = this.find(item);
var count = 0;
while(++count <= n){
current = current.next;
}
return current;
},
//实时链表长度
len:function(){
var count=1;
var current = this.head;
while(current.next !== this.head){
count++;
current = current.next;
}
return count;
}
}
})(window)
//任务：40人隔3杀1
function game(n,m){
var list = new List();
list.add(n);
var del,pre;
var current = list.head;
while(list.len() >= m){
del = list.findLater(current.ele,m-1);
if(del === list.head){
list.head = list.head.next;
}
pre = list.findpre(del.ele);
pre.next = del.next;
current = list.findLater(current.ele,m-1)
}
list.print();
}
game(1000,3)
</script>
