在 AS3 数组中查找序列

问题描述

有没有人知道怎么做才能找到数组中的序列数?

does anyone have any idea what to do in order to find the number of sequences in an array?

例如，我的数组是:

var numbers:Array = new Array(banana, banana, apple, banana, banana);

我需要找到的是:* 有多少次香蕉"的序列* 以及每个序列的长度.

and i need to find is:* how many times there is a sequence of "banana"* and the length of each sequence.

为了得到以下结果我做了什么shell:2,1,2(2个香蕉，1个苹果，2个香蕉)

what shell i do in order to get the following result:2,1,2 (2 bananas, 1 apple, 2 bananas)

我尝试使用 do while 循环，但我想我错过了一些东西.

i tried with do while loop, but i i guess i miss something.

一个简短的例子将不胜感激！

a short example will be very appreciated!

谢谢

推荐答案

var prev:String = null;
var q:int = 0;
var result:Array = new Array();
for(var i:int=0; i<numbers.length; ++i){
  if(prev!=numbers[i]){
    if(q>0) result.push(q);
    q=1;
    prev=numbers[i];
  }
  else ++q;
}
if(q>0) result.push(q);

这是，假设香蕉等是字符串(可能是上面的错字?).修改为其他类型的对象会很简单

This is, assuming banana, etc. are strings (probably a typo above?). It would be simple to modify to other types of objects

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