add file

src/219.c

@@ -0,0 +1,32 @@
+//
+// Created by xfj12 on 2025/3/24.
+//
+#include <assert.h>
+#include <math.h>
+#include <stdbool.h>
+
+bool containsNearbyDuplicate(int *nums, int numsSize, int k)
+{
+    for (int i = 0; i < numsSize; i++)
+    {
+        for (int j = i; j < numsSize; j++)
+        {
+            if (abs(i - j) > k)
+                continue;
+            if (nums[i] == nums[j] && i != j)
+                return true;
+        }
+    }
+
+    return false;
+}
+
+int main()
+{
+    int nums1[] = {1, 2, 3, 1};
+    assert(containsNearbyDuplicate(nums1, sizeof(nums1) / sizeof(int), 3) == true);
+    int nums2[] = {1, 0, 1, 1};
+    assert(containsNearbyDuplicate(nums2, sizeof(nums2) / sizeof(int), 1) == true);
+    int nums3[] = {1, 2, 3, 1, 2, 3};
+    assert(containsNearbyDuplicate(nums3, sizeof(nums3) / sizeof(int), 2) == false);
+}