3427

include/solution/3427.h

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+//
+// Created by xfj12 on 2025/3/25.
+//
+
+#ifndef INC_3427_H
+#define INC_3427_H
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+    int subarraySum(int *nums, int numsSize);
+#ifdef __cplusplus
+}
+#endif
+#endif // INC_3427_H

src/3427.c

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+//
+// Created by xfj12 on 2025/3/25.
+//
+#include <solution/3427.h>
+
+#define max(a, b) ((a) > (b) ? (a) : (b))
+
+int subarraySum(int *nums, int numsSize)
+{
+    int sum = 0;
+    for (int i = 0; i < numsSize; i++)
+        for (int j = max(0, i - nums[i]); j <= i; j++)
+            sum += nums[j];
+    return sum;
+}

tests/test_3427.cpp

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+//
+// Created by xfj12 on 2025/3/25.
+//
+#include <gtest/gtest.h>
+#include <solution/3427.h>
+
+TEST(SubarraySumTest, Test1)
+{
+    int nums[] = {2, 3, 1};
+    int result = subarraySum(nums, 3);
+    EXPECT_EQ(result, 11);
+}
+
+TEST(SubarraySumTest, Test2)
+{
+    int nums[] = {3, 1, 1, 2};
+    int result = subarraySum(nums, 4);
+    EXPECT_EQ(result, 13);
+}