function getWeekNumString(weekNumList) {
    var orderedWeekNumList = weekNumList.sort(function (a, b) { return parseInt(a) - parseInt(b); });
    var isSingle = true;
    var isDouble = true;
    var minWeekNum = 0;
    var maxWeekNum = 0;
    if (weekNumList.length > 0) {
        minWeekNum = orderedWeekNumList[0];
        maxWeekNum = orderedWeekNumList[orderedWeekNumList.length - 1];
    }
    for (var i = 0; i < orderedWeekNumList.length; i++) {
        var curWeekNum = orderedWeekNumList[i];
        if (curWeekNum == 0) {
            isSingle = false;
            isDouble = false;
            break;
        }
        if (curWeekNum != minWeekNum + (i * 2)) {
            isSingle = false;
            isDouble = false;
            break;
        }
        //判断单周
        if (curWeekNum % 2 != 1) {
            isSingle = false;
        }
        //判断双周
        if (curWeekNum % 2 != 0) {
            isDouble = false;
        }
    }
    if (minWeekNum == 0 && maxWeekNum == 0) {
        return "";
    }
    if (isSingle) {
        return minWeekNum.toString() + "-" + maxWeekNum.toString() + "单周";
    }
    if (isDouble) {
        return minWeekNum.toString() + "-" + maxWeekNum.toString() + "双周";
    }

    return mergeInt(orderedWeekNumList).join(",");
}

function mergeInt(enumerable) {
    var result = new Array();
    var orderedEnumerable = enumerable.sort(function (a, b) { return parseInt(a) - parseInt(b); });
    var numberCount = orderedEnumerable.length;
    if (numberCount == 0) return result;
    var firstNum = orderedEnumerable[0];
    var lastNum = orderedEnumerable[0];
    for (var i = 1; i < numberCount; i++) {
        var curNum = orderedEnumerable[i];
        if (curNum > (lastNum + 1)) {
            if (firstNum == lastNum) {
                result.push(firstNum.toString());
            }
            else {
                result.push(firstNum.toString() + '-' + lastNum.toString());
            }
            firstNum = curNum;
        }

        lastNum = curNum;
    }

    if (firstNum == lastNum) {
        result.push(firstNum.toString());
    }
    else {
        result.push(firstNum.toString() + '-' + lastNum.toString());
    }

    return result;
}

CMSFunction.DataTableFormatter.WeekNum = function (index, row, value) {
    if (!value || !Array.isArray(value)) {
        return "";
    }
    return getWeekNumString(value);
}