聰明組合（Abbreviated Wheels）區間刪減法找5膽系統

對應的純 Java 核心演進程式碼 (Java Implementation)

import java.util.*;

public class AbbreviatedWheelSystem {

    public static void main(String[] args) {
        // 模擬過去開獎歷史數據
        List<List<Integer>> historyDraws = Arrays.asList(
            Arrays.asList(4, 15, 23, 31, 42, 48),
            Arrays.asList(12, 19, 25, 33, 39, 45),
            Arrays.asList(8, 14, 22, 28, 35, 41)
        );

        System.out.println("=== 系統確認已載入過去各期號碼 ===");
        runAbbreviatedWheel(historyDraws);
    }

    public static void runAbbreviatedWheel(List<List<Integer>> history) {
        // 定義五個區間
        int[][] ranges = { {1, 10}, {11, 20}, {21, 30}, {31, 40}, {41, 49} };
        int[] zoneCounts = new int[5];

        // 統計最近幾期各區間出現次數以找出最冷門（可能斷區）的區間
        for (List<Integer> draw : history) {
            for (int num : draw) {
                for (int i = 0; i < ranges.length; i++) {
                    if (num >= ranges[i][0] && num <= ranges[i][1]) {
                        zoneCounts[i]++;
                    }
                }
            }
        }

        // 尋找最少開出的區間作為預測斷區
        int minIndex = 0;
        for (int i = 1; i < zoneCounts.length; i++) {
            if (zoneCounts[i] < zoneCounts[minIndex]) {
                minIndex = i;
            }
        }

        System.out.println("預測斷區（刪除區間）: " + ranges[minIndex][0] + "-" + ranges[minIndex][1]);

        // 在其餘四個區間中各挑選膽碼湊齊 5 膽
        List<Integer> fiveBals = new ArrayList<>();
        Random random = new Random();

        for (int i = 0; i < ranges.length; i++) {
            if (i == minIndex) continue; // 跳過刪除區間
            
            // 模擬從該區間選取一個代表號碼
            int low = ranges[i][0];
            int high = ranges[i][1];
            int picked = low + random.nextInt(high - low + 1);
            fiveBals.add(picked);
        }

        // 若不足5個（通常剛好4個區間各挑1-2個補齊5個）
        while (fiveBals.size() < 5) {
            int extraZone = (minIndex + 1) % 5;
            int low = ranges[extraZone][0];
            int high = ranges[extraZone][1];
            int picked = low + random.nextInt(high - low + 1);
            if (!fiveBals.contains(picked)) {
                fiveBals.add(picked);
            }
        }

        System.out.println("最終產生的 5 膽組合: " + fiveBals);
    }
}