java2/RandomGenerator.java at master · kekcoke/java2 · GitHub

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package ca.bcit.comp2526.a2a;

/**
 * Generates random-generated number.
 * @author Kevin Oane
 * @version 1.0
 */
public final class RandomGenerator {
    private static final int[] NUMBERS;

    static {
        NUMBERS = new int[] { -1155484576, -723955400, 1033096058, -1690734402, -1557280266, 1327362106, -1930858313,
                502539523, -1728529858, -938301587, 1431162155, 1085665355, 1654374947, -1661998771, -65105105,
                -73789608, -518907128, 99135751, -252332814, 755814641, 1180918287, 1344049776, 553609048, 1580443894,
                629649304, -1266264776, 99807007, 5955764, -1946737912, 39620447, -152527805, -1877116806, 448784075,
                1086124775, -1609984092, 1227951724, 1764356251, 64111306, -960731419, -100082026, -39845375,
                -1339022546, 2092649110, -568315836, -1089884900, -81839914, -1146103148, -1846688624, -784703072,
                55004124, -691960657, 1770461755, -2032810463, -1177788003, -432352882, -65824064, 575267217,
                -1949367821, 356750287, 798819494, -92022521, 1318001577, -1192467086, -1412716779, -1223932479,
                276053035, 615126903, 1542603436, 1988388716, 1177882237, 19265476, -1430871151, 307082914, -1333570194,
                1496453452, -790542135, 1455004595, -1690249972, -604059026, -290476856, -122204761, -1097539750,
                -576617062, -2002123957, -1663951485, 193034304, 768747578, 1337360486, 934457803, 873612482,
                -624972850, 355564760, 41547336, 1781447028, -1321591463, 1081281446, -982203381, -222544851,
                -1233998085, -1331702554, 907249073, 206843130, -931610657, 1697401307, -234791961, -996341162,
                61144662, -1638496702, 1693091376, -1667947369, -627963836, 105673451, -918940699, -300903254,
                -28037702, 1358495114, -502062723, 2056481282, 731396580, 617380302, -162912754, 818693069, -1184143835,
                -410943565, -1385753324, 1233308008, -840115328, -1474241772, 1895913584, 1376826901, 1984652857,
                412901507, -632101198, 2025024491, -2139603013, -1233011876, -34604646, -1854979571, -131984708,
                -1866233577, 1516579035, 1612513822, 203005342, -911714850, 307621155, 13453556, 125015832, 483675743,
                2077347671, 37011083, -120473323, 2069609186, -46741469, 1502566715, -998828580, -1206282339,
                -2141482063, -1550311379, 1097472880, 1449582151, 1327824311, -1105846005, -651630279, -1174121238,
                223701431, 810978550, 43703267, 835843581, 1519786882, -772329283, 372536197, -317962831, -642907139,
                -706495414, 15792134, -1116133237, 1322391079, -1231319713, -2011725892, 1299386162, -348690342,
                1341976962, 1190607957, -262501494, -540039728, -986836170, -1675546118, -1948015872, -392391576,
                638256747, 191085745, -97160665, -1517309270, 1375971382, 2133755906, 891811204, -2118700536,
                2110473668, -2058625827, 861211557, 1573507430, 1625767564, 2051434938, -1922104200, -1271440420,
                927536580, 1386277121, 1184911833, 50057146, -185358571, -1284027987, -1025692308, -1093701172,
                -1116573039, -1686684117, 2068400044, 1009668318, -1847249948, 1670927751, 408998980, -380240510,
                1439774921, 718930634, -1800042595, 16808464, -1743967552, 1137718941, 252008887, -460347667,
                -1053605891, 1278046001, 947528252, 1842130704, 1599145891, -1341955486, 1631478226, 1754478786,
                -1370798799, 1516348954, 730123440, -1409786204, 1491046204, -1114899725, -656053644, -453397258,
                -694901410, -1804067552, 13393714, -2101289195, 176533870, 1339899789, -1511804464, -1974699707,
                -1660688399, -115501757, 86156176, };
    }

    private static int next;

    /**
     * Private constructor
     */
    private RandomGenerator() {
    }

    /**
     * Resets.
     */
    public static void reset() {
        next = 0;
    }

    /**
     * Generates random-generated number
     * up to specified parameter.
     * @param max
     *           Maximum random-generated number.
     * @return
     *           Random-generated number.
     */
    public static int nextNumber(final int max) {
        try {
            return (Math.abs(NUMBERS[next]) % max);
        } finally {
            next++;

            if (next >= NUMBERS.length) {
                next = 0;
            }
        }
    }
}