mod: findClosestNumber

lib/utils/utils.dart

@@ -209,6 +209,8 @@ class Utils {
   static int findClosestNumber(int target, List<int> numbers) {
     int minDiff = 127;
     int closestNumber = 0; // 初始化为0，表示没有找到比目标值小的整数
+
+    // 向下查找
     try {
       for (int number in numbers) {
         if (number < target) {
@@ -221,6 +223,20 @@ class Utils {
         }
       }
     } catch (_) {}
+
+    // 向上查找
+    if (closestNumber == 0) {
+      try {
+        for (int number in numbers) {
+          int diff = (number - target).abs();
+
+          if (diff < minDiff) {
+            minDiff = diff;
+            closestNumber = number;
+          }
+        }
+      } catch (_) {}
+    }
     return closestNumber;
   }