Function mergeLow

libs/echarts/echarts.simple.js:6112–6256

(start1, length1, start2, length2)

    }

    function mergeLow(start1, length1, start2, length2) {
        var i = 0;

        for (i = 0; i < length1; i++) {
            tmp[i] = array[start1 + i];
        }

        var cursor1 = 0;
        var cursor2 = start2;
        var dest = start1;

        array[dest++] = array[cursor2++];

        if (--length2 === 0) {
            for (i = 0; i < length1; i++) {
                array[dest + i] = tmp[cursor1 + i];
            }
            return;
        }

        if (length1 === 1) {
            for (i = 0; i < length2; i++) {
                array[dest + i] = array[cursor2 + i];
            }
            array[dest + length2] = tmp[cursor1];
            return;
        }

        var _minGallop = minGallop;
        var count1;
        var count2;
        var exit;

        while (1) {
            count1 = 0;
            count2 = 0;
            exit = false;

            do {
                if (compare(array[cursor2], tmp[cursor1]) < 0) {
                    array[dest++] = array[cursor2++];
                    count2++;
                    count1 = 0;

                    if (--length2 === 0) {
                        exit = true;
                        break;
                    }
                }
                else {
                    array[dest++] = tmp[cursor1++];
                    count1++;
                    count2 = 0;
                    if (--length1 === 1) {
                        exit = true;
                        break;
                    }
                }