//笛卡儿积组合 function descartes(list) { //parent上一级索引;count指针计数 var point = {}; var result = []; var pIndex = null; var tempCount = 0; var temp = []; //根据参数列生成指针对象 for(var index in list) { if(typeof list[index] == ‘object‘) { point[index] = {‘parent‘:pIndex,‘count‘:0} pIndex = index; } } //单维度数据结构直接返回 if(pIndex == null) { return list; } //动态生成笛卡尔积 while(true) { for(var index in list) { tempCount = point[index][‘count‘]; temp.push(list[index][tempCount]); } //压入结果数组 result.push(temp); temp = []; //检查指针最大值问题 while(true) { if(point[index][‘count‘]+1 >= list[index].length) { point[index][‘count‘] = 0; pIndex = point[index][‘parent‘]; if(pIndex == null) { return result; } //赋值parent进行再次检查 index = pIndex; } else { point[index][‘count‘]++; break; } } } } //该代码片段来自于: http://www.sharejs.com/codes/javascript/7013 var aa=[1,2,3],bb=[1,2,3],cc=[1,2,3],dd=[1,2,3]; var zz=[aa,bb,cc,dd];//此处数组个数任意 var selectSpec = [ [‘16G‘,‘64G‘,‘128G‘] , [‘土豪金‘,‘银色‘,‘黑色‘,‘pink‘],[‘联通3G存费送餐‘,‘联通4G存费送餐‘,‘联通2G存费送餐‘], [‘76元套餐‘,‘106元套餐‘,‘206元套餐‘]]; var result=descartes(selectSpec); console.log(result); document.write(result);
时间: 2024-11-09 09:04:36