["aaa","aaa","","ddd","eee","eee","eee","eee","eee","eee","yyy","zzz","ggg","ggg"] 有这么一个数组，中间有一段字符串是相同的，我们不知道是什么字符串，现在，请求出中间相同一段的起止下标以及内容
var rest=[];
var array=["aaa","aaa","","ddd","eee","eee","eee","eee","eee","eee","yyy","zzz","ggg","ggg"];
array.forEach(function (v,i) {
var sameInLeft=array[i]==array[i-1]?1:0;
var sameInRight=array[i]=array[i+1]?1:0;
if(sameInLeft+sameInRight==1){
rest.push(i);
}
});
for(var i=0;i<rest.length/2;i++){
var indexArr=[rest[i*2],rest[i*2+1]];
//排除收尾连续
if(indexArr[0]!=0&& indexArr[1]!=(array.length-1)){
console.log(indexArr,array.slice(indexArr[0],indexArr[1]+1))
}
}
——》
[4, 5] [1, 1]
[6, 7] [1, 1]
[8, 9] [1, 1]
[10, 11] [1, 1]
[12, undefined] []