feat(admin): 尾首概率弹窗增加相同明细数据

后端新增 tailSameDetail 和 headSameDetail 字段，统计相邻两期
特码尾数/首位相同的具体值及出现次数
前端弹窗新增两个明细表格展示

application/admin/model/History.php

@@ -988,7 +988,7 @@ class History extends Model
      * 尾首概率：下一期尾数/首位与前一期相同的概率
      * 统计相邻两期特码的尾数（num%10）和首位（floor(num/10））变化
      * @param int $periods 查询最近多少期
-     * @return array {tailProb: float, headProb: float, totalTransitions: int, periodCount: int}
+     * @return array {tailProb: float, headProb: float, tailSameDetail: array, headSameDetail: array, totalTransitions: int, periodCount: int}
      */
     public function getTailHeadProbability($periods = 100)
     {
@@ -999,7 +999,7 @@ class History extends Model
             ->select();
 
         if (empty($history) || count($history) < 2) {
-            return ['tailProb' => 0, 'headProb' => 0, 'totalTransitions' => 0, 'periodCount' => 0];
+            return ['tailProb' => 0, 'headProb' => 0, 'tailSameDetail' => [], 'headSameDetail' => [], 'totalTransitions' => 0, 'periodCount' => 0];
         }
 
         // 按时间升序排列（旧→新）
@@ -1008,6 +1008,8 @@ class History extends Model
         $tailSame = 0;
         $headSame = 0;
         $totalTransitions = 0;
+        $tailSameDetail = [];  // 尾数相同明细: key为尾数, value为次数
+        $headSameDetail = [];  // 首位相同明细: key为首数, value为次数
 
         for ($i = 0; $i < count($history) - 1; $i++) {
             $currentNum = (int)$history[$i]['num7'];
@@ -1018,21 +1020,51 @@ class History extends Model
             }
 
             $totalTransitions++;
+            $currentTail = $currentNum % 10;
+            $nextTail = $nextNum % 10;
+            $currentHead = intval(floor($currentNum / 10));
+            $nextHead = intval(floor($nextNum / 10));
 
             // 尾数相同（个位相同）
-            if (($currentNum % 10) === ($nextNum % 10)) {
+            if ($currentTail === $nextTail) {
                 $tailSame++;
+                $key = $currentTail;
+                if (!isset($tailSameDetail[$key])) {
+                    $tailSameDetail[$key] = 0;
+                }
+                $tailSameDetail[$key]++;
             }
 
             // 首位相同（十位相同）
-            if (intval(floor($currentNum / 10)) === intval(floor($nextNum / 10))) {
+            if ($currentHead === $nextHead) {
                 $headSame++;
+                $key = $currentHead;
+                if (!isset($headSameDetail[$key])) {
+                    $headSameDetail[$key] = 0;
+                }
+                $headSameDetail[$key]++;
+            }
+        }
+
+        // 排序：尾数按0-9排序，首位按0-4排序
+        $tailResult = [];
+        for ($t = 0; $t <= 9; $t++) {
+            if (isset($tailSameDetail[$t])) {
+                $tailResult[] = ['tail' => $t, 'count' => $tailSameDetail[$t]];
+            }
+        }
+        $headResult = [];
+        for ($h = 0; $h <= 4; $h++) {
+            if (isset($headSameDetail[$h])) {
+                $headResult[] = ['head' => $h, 'count' => $headSameDetail[$h]];
             }
         }
 
         return [
             'tailProb' => $totalTransitions > 0 ? round($tailSame / $totalTransitions * 100, 2) : 0,
             'headProb' => $totalTransitions > 0 ? round($headSame / $totalTransitions * 100, 2) : 0,
+            'tailSameDetail' => $tailResult,
+            'headSameDetail' => $headResult,
             'totalTransitions' => $totalTransitions,
             'periodCount' => count($history)
         ];