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var arr={1:2:3,a:b:c,x:y:z,...,n}
怎么提到
a[1] = {1,a,x}
a[2] = {1,a,y}
a[3] = {1,a,z}
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function doExchange(doubleArrays){
var len=doubleArrays.length;
if(len>=2){
var len1=doubleArrays[0].length;
var len2=doubleArrays[1].length;
var newlen=len1*len2;
var temp=new Array(newlen);
var index=0;
for(var i=0;i<len1;i++){
for(var j=0;j<len2;j++){
temp[index]=doubleArrays[0][i]+doubleArrays[1][j];
index++;
}
}
var newArray=new Array(len-1);
if(len>2){
newArray[1]=doubleArrays[2];
}
newArray[0]=temp;
return doExchange(newArray);
}
else{
return doubleArrays[0];
}
}
//调用示例:
function test(){
var temparr=[
["XXL","XL"],
["红色","白色"]
];
var ret = doExchange(temparr);
document.write("共有:" + ret.length + "种组合!<br/>");
for (var i = 0; i < ret.length; i++) {
document.write(ret[i]+"<br/>");
}
}