js数组操作问题

Question

现在有一个数组如下
var arr = [111,23,44,534,4123,312,32,3123,424,552,24,55];
每隔三个切割一次 形成一个新的数组,
[[111,23,44],[534,4123,312],[32,3123,424],[24,55]]
再在新的数组里取最大值和index 形成最终数组
arr = arr=[{'index':0,'max':111},{'index':1,'max':4123},{'index':2,'max':3123},{'index':3,'max':55}];
请问 如何做到

Answer 1

var arr = [111,23,44,534,4123,312,32,3123,424,552,24,55];var result = [];for(var i=0,j=0; i<arr.length; i+=3,j++){&nbsp; &nbsp;result.push({'index': j, 'max': Math.max.apply(Math, arr.slice(i,i+3))});}console.log(result);