Sort and create new array in AngularJS

Sounds like you could use the reduce method. reduce allows you to iterate over an array to accumulate values.

Either structure should work fine, obviously it will just affect how you write your method to transform the data how you'd like it. I'll do the first one for you:

$scope.result = $scope.items1.map(function(answerData){
    answerData = answerData.sort(function(a, b) {
        return a.order < b.order ? -1 : 1
    });
    return answerData.reduce(function(result, value) {
        result.push(value.answer);
        return result;
    }, [answerData[0].idcustomer]);
});

Let's break this down. We're using map to iterate over your $scope.items1 array and return something for each value in the array. Since $scope.items1 is an array of arrays (or a 2D array), each answerData value will itself be an array. First, we sort the answerData array by order. Then, we use reduce on each of the answerData arrays to get an array with just the idcustomer and each of the answer fields. reduce takes a callback function and an initial value. In this case, the initial value is [answerData[0].idcustomer]. Note that this will break if answerData is empty! We're defining two parameters for the callback function, result and value. result is the total accumulated result from each of the previous iterations, and value is the current element of the array. For each value we simply push its answer field onto the result array, and return the updated array.

Plucking the idcustomer field off the first answerData element is a little odd, so your second data structure may actually work better. But, I'll let you figure out how to do that!

EDIT: Since you edited your question to only include the other structure, here's the transform you need:

$scope.result = $scope.items.map(function(answerData) {
    var sortedDescription = answerData.description.sort(function(a,b) {
        return a.order < b.order ? -1 : 1;
    });
    return sortedDescription.reduce(function(result, value) {
        result.push(value.answer);
        return result;
    }, [answerData.idcustomer]);
});